Playing gambits is fun, but most importantly in so doing you will hone your tactical and attacking skills, while learning the importance of seizing and maintaining the initiative...

https://en.wikipedia.org/wiki/List_of_chess_gambits

http://www.angelfire.com/nf/chess/Gambits.html

http://www.ianchessgambits.com/

https://www.mark-weeks.com/aboutcom/aa04g10.htm

https://chesslessons.wordpress.com/category/danish-gambit/

https://chesslessons.wordpress.com/category/evans-gambit/

https://www.youtube.com/watch?v=ZjxYuTRG4RE

http://www.thechesswebsite.com/top-7-aggressive-chess-openings/

The Chess GAMBITS Tier List ft. Hikaru Nakamura - GothamChess...

https://www.youtube.com/watch?v=S9N6Bo7BBPg

Chess Opening Theory - Wikipedia...

https://en.wikipedia.org/wiki/Chess_opening

https://en.wikibooks.org/w/index.php?title=Chess_Opening_Theory&oldid=3395654

List of Chess Openings, With ECO Codes...

https://en.wikipedia.org/wiki/List_of_chess_openings

https://www.chessopolis.com/eco-codes-expanded/

50 Chess Opening Lessons - Chess.com...

https://www.chess.com/lessons/learn-the-openings

Chess For Beginners | Study Plan: The Opening - Chess.com...

https://www.chess.com/article/view/study-plan-for-beginners-the-opening

A downloadable document (pdf format), introductory overview of the major openings...

http://www.chesskids.org.uk/grownups/openings.pdf

Discovering Chess Openings: Building Opening Skills from Basic Principles...

By John Emms. A MUST-READ for the beginner-novice. Many chess teachers advise against spending excessive time on the study of openings variations for the beginner, but they do agree it is important to acquire a solid understanding of opening PRINCIPLES right from the start. This book explains the basics of opening FUNDAMENTALS better than any other book. If you are uncertain about what you should be thinking and doing during the opening, this book does an exceptional job of addressing these issues...

https://www.amazon.com/gp/product/1857444191/ref=dbs_a_def_rwt_bibl_vppi_i0

https://www.google.com/books/edition/Discovering_Chess_Openings/LzQQEAAAQBAJ?hl=en&gbpv=1&dq=Discovering+Chess+Openings&printsec=frontcover

Good Chess Openings Books for Beginners and Beyond...

https://www.chess.com/blog/RussBell/good-chess-openings-books-for-beginners-and-beyond

The ChessWebsite - presents brief video introductions to a variety of openings...

http://www.thechesswebsite.com/chess-openings/

https://www.youtube.com/playlist?list=PL95D57046F196F063

Chessable's Guides to Chess Openings... - This is a popular site with an innovative, interactive approach to chess instruction - on every aspect of chess, including openings. I recommend to check it out....some of the courses are free...

https://www.chessable.com/

https://www.chessable.com/blog/opening-guide/

https://www.chessable.com/blog/chess-openings/

SimplifyChess - the themes, plans and strategies of several of the major openings as well as the major pawn structures arising from the openings and the implications for how to play them...

https://simplifychess.com/blog.html

https://simplifychess.com/homepage/openings.html

https://simplifychess.com/pawn-structures/why-learn-pawn-structures/index.html

https://simplifychess.com/pawn-structures/complete-guide-chess-pawn-structures/index.html

My Favorite Chess Openings by Rating - 'GothamChess' - IM Levy Rozman

https://www.youtube.com/watch?v=NFod-ozimmM&t=103s

More quick Chess Openings tutorials by 'GothamChess' - IM Levy Rozman

https://www.youtube.com/watch?v=Qdyik5UwBtM

https://www.youtube.com/playlist?list=PLBRObSmbZluTpMdP-rUL3bQ5GA8v4dMbT

https://www.youtube.com/results?search_query=gothamchess+openings

Well-presented introductions to many openings by 'Hanging Pawns'

https://www.youtube.com/channel/UCkJdvwRC-oGPhRHW_XPNokg

https://www.youtube.com/results?search_query=hanging+pawns+opening

Instructive videos on miscellaneous aspects of openings by 'Coach Kestony'

https://www.youtube.com/playlist?list=PLhGeKsjHa5nw4aeodgLJ64KjvYUvnK3eH

Instructive introductions to many openings by 'Jim's Chess Channel'

https://www.youtube.com/playlist?list=PLPaM3qJ0ieXt2Dmy9SjfQvCfhs-pbWhik

Tutorial articles (in pdf format) on various openings, from Abby Marshall's "The Openings Explained", Tim Harding's "Kibitizer" and Dan Heisman's "Novice Nook" columns of the now virtually defunct ChessCafe.com, are archived here (along with many other interesting and instructive articles on a variety of chess topics, by different authors ) - I highly recommend to browse this gold mine of chess info.....(be patient - the site can be slow to load)...

https://web.archive.org/web/20140714190611/http:/www.chesscafe.com/archives/archives.htm#The%20Openings%20Explained

Primarily for experienced players - a site devoted to presenting the latest developments in chess opening theory - Chesspublishing.com. Although it's a subscription site, there is some free content including the forums. For example.....

Some opening repertoire suggestions - by GM Nigel Davies and IM Andrew Martin...
http://www.chesspublishing.com/content/repert.htm

http://www.chesspublishing.com/content/repert2.htm

Considerations involved in choosing an opening repertoire.....

http://www.mark-weeks.com/aboutcom/aa02i07.htm

http://grandpatzerchess.blogspot.com/2007/03/openings-for-improving-players-part-1.html

http://grandpatzerchess.blogspot.com/2007/03/openings-for-improving-players-part-2.html

http://grandpatzerchess.blogspot.com/2007/03/openings-for-improving-players-part-3.html

Thoughts On Choosing a Chess Opening Repertoire - 'Hanging Pawns'...

https://www.youtube.com/watch?v=nr-_W6Eujzg

The Amateur's Mind (for want of a better category) #3 A big rant about how to choose opening lines - ChessCoach Andras....

https://www.youtube.com/watch?v=mRgJ_rX9bCI&list=RDCMUCcYZTGsTO5TbCaA1O0wcBzw&index=1

What opening should I play? - ChessCoach Andras....

https://www.youtube.com/watch?v=LlPHVLfFH3I

Chess Openings Tier Lists - GM Hikaru Nakumura and IM Levy Rozman (aka 'GothamChess')...

For those trying to decide which openings to play. I recommend to check out the *Tier List series of videos...

Chess openings are rated in terms of how appropriate or intrinsically effective they are vis-a-vis player skill level - i.e., beginner vs intermediate vs GM’s, etc. Particularly in the beginner tier list/videos they frequently refer to some openings as "garbage" or "bad" (IMO an unfortunate choice of terms). However, these qualifiers are meant to convey how appropriate the specific opening is for the level of player being discussed, in terms of, for example, how easy it may be for an opponent to equalize or gain an advantage against suboptimal play or how much so-called "theory" (i.e., documented variations) the opening encompasses, or how much emphasis the opening places on positional versus tactical skills in order to play it well, etc.

So, an openings they refer to as "garbage" for a beginner may be appropriate for higher rated players who typically know more of the theory for particular openings and have a more highly developed understanding of positional concepts. For each of the openings discussed be sure also to pay attention to whether the opening and its evaluation is from White’s or Black’s perspective...

Chess Openings *Tier List – GMHikaru (complete, Beginner thru GM)…
https://www.youtube.com/watch?v=M9CwH47r6og&list=PL4KCWZ5Ti2H43-gcoByRnZs5fVR_Lg133&index=1

An easy to learn, "Universal" opening for White - 'Kestony'...

https://www.chess.com/forum/view/for-beginners/best-opening-for-beginner

https://www.youtube.com/watch?v=vzAZYyydYe8

A New Approach To Your Openings (Used By Gukesh) - 'GM Illingworth '- Chess.com....
https://www.chess.com/blog/Illingworth/a-new-approach-to-your-openings-used-by-gukesh?alert=content

13 Types of Chess Openings...

https://chessfox.com/13-different-types-of-chess-openings/

Overview of Open Games vs Closed Games....

https://en.wikipedia.org/wiki/Open_Game

https://en.wikipedia.org/wiki/Closed_Game

1.e4 or 1.d4 – which is the better move?

While the conclusions reached by the author in the following Chessbase.com article are generally acknowledged to be correct, an important point not clearly made is that many 1.d4 openings are 'closed' compared to the many 'open' games that begin with 1.e4, where 'closed' games tend to lead to play which is more positional, maneuvering in style compared to 'open' games which tend to be more tactical in character. This puts a premium on proficiency in positional concepts and techniques when playing 1.d4 games whereas in many cases 1.e4 games rely more on, and provide more opportunities for honing tactical skills. These considerations generally mean that players, typically the beginner-novice, who are not as skilled in, or comfortable with positional chess may wisely be advised to focus more on the king pawn, open games as White.

https://en.chessbase.com/post/1-e4-or-1-d4-which-is-the-better-move#:~:text=e4%20is%20an%20attacking%20move,likely%20to%20end%20in%20draws

Differences between 1.e4 and 1.d4 - 'David Pruess'...

https://www.youtube.com/watch?v=jHlZiNk6p-k

e4 vs d4 the Tactical vs Positional Myth? - 'ChessCoach Andras'...

https://www.youtube.com/watch?v=-iwpTudIspw

Chess Traps...

https://www.youtube.com/@GJChess

https://www.youtube.com/channel/UCFh6FCMsTdnfEA_N7rdIBnw/videos

***************************************************************************************************

Discover more helpful and instructive chess resources, including chess book recommendations, in my Chess.com blog.

***************************************************************************************************

Chess Openings Resources for Beginners and Beyond

RussBell's Blog