likely you will meet a lot of these sidelines more than anything else so knowing how to play will be useful. also most of them are outright bad. 2 nc3 is decent enough, 2 e5 is just a weak advance version of either french or caro.
the bb5+ is a good line, and is quite subtle. ruins the fun you would want to get in the icelandic and portuguese.
Most of these I have played but I haven't gotten people playing the Bb5+ line so I'll definitely study that, thank you.
I hate it when people play the advance variations, but my caro/french studying does come in handy then lol
"Smerdon's Scandinavian" is an excellent book for the study of the opening.
When it comes to lesser known variations I quite like this approach:
Something like this. It's a gentle way to get through the opening when you know what not to do.
Join the Scandinavian Club!
I recommend this tricky line
That is a really interesting line I will most definitely look at that thank you so much!!
The Scandinavian is by far my favorite opening and there's a lot of different variations. So far I've learned the Icelandic Gambit, Portuguese Gambit, blackburne kloosterboer gambit, and the classical and modern variations, but I was wondering if anyone knows more variations that I should study