The 5 opening principals

In the opening of chess a bad decision will decide the game. So to avoid getting in a bad opening positions here are the 5 opening principles to follow

1.Control the center.Controlling the center will allow your pieces control more good squares and move more freely and make your opponent struggle to move.

2.Develop your pieces quickly.Devoloping you pieces quickly instead of moving you pieces are continuously will make you get a good position.

3.Don't move a piece twice before move 10.Moving a piece twice before move 10 will allow your opponent to gain tempo or time.And that will make your opponents position better.

4.Don't move your queen out too early.If you move your queen out too early your queen may get trapped by other pieces.So instead save your queens power for later on.

5.Castle.Castling will let your king get protected by 3 pawns and will develop you rook.

And that is the 5 opening principles.

Number 4 is not accurate. I am pretty sure that the Scandinavians purpose is to have you Queen out. Many strong openings also don't do 1 and 3. But still useful 

Chess is a difficult game: all rules have exceptions. For each rule there are grandmaster games that violate them.

Chess Openings Resources for Beginners and Beyond...

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

No offense, but I don't really want to learn opening principals from a 700 rated player.

Rules are to be distinguished from guidelines.

Rules must be adhered to.

Guidelines are recommendations and typically apply if by doing so, you don't do harm to yourself.  That is, whether you adhere to guidelines is dependent on whether they make sense for the situation at hand.  For example, the admonition to not move your Queen out early (where it might be exposed to imminent attack) is a guideline, not a rule. 

Having said that, the term "rule" is frequently used interchangeably (and erroneously) with "guideline".

I didnt know we had 5 principals in opening school

5 principles and none of them are connect your rooks? ha!

It's by a 700. What did you expect?

I didn't click on the profile before reading. I did the opposite. Therefore after reading I expected 700

I've seen 500 rated players give opening principals before.

Actually, I don't think they'd even reached 500 yet.

The Scandinavian's purpose is to transpose into a Caro-Kann type formation without allowing White the option of playing the Advance variation.

im talking about this main line that i see alot

Yes, so am I.

Look a little deeper into the position. First the Caro-Kann:

Pay particular attention to the Pawn structure. The White e-Pawn has been exchanged for the Black d-Pawn, leaving a White Pawn on d4 facing off against Black Pawns on c6 and e6.

Now the Scandinavian:

Again, the White e-Pawn has been exchanged for the Black d-Pawn, leaving a White Pawn on d4 facing off against Black Pawns on c6 and e6.

THE POSITION IS ESSENTIALLY THE SAME. Only details are different.

Opening principles are important but there are possible exceptions.

Also for the top players there are way more than 5.

For former World Champion Lasker there were only 4:

1) Play d- and e-pawns only

2) Do not move the same piece twice

3) Knights before bishops

4) Do not pin the king's knight with your queen's bishop before the opponent has castled

All of these 4 rules have exceptions.

These are more advanced

Also these aren't the most accurate you sure Lasker said that?

d and e pawns only wth?

No, Nimzovitsch was in an era before Lasker I am pretty sure. Some people didn't believe in hyper-modern chess though

Lasker wrote this in his "Common Sense in Chess". Lasker borrowed these from Steinitz.

Steinitz 1836-1900, Lasker 1868-1941, Nimzovich 1886-1935

Capablanca did not believe in hypermodern chess.

Lasker explained his 4 rules with the endgame advantages of following these.