opening repertoire

Isn't finding out yourself what you like half the fun?

Check out Dereque Kelley on youtube. He explains the ideas of openings really well.

For someone seeking help with choosing openings, I usually bring up Openings for Amateurs by Pete Tamburro (2014).

http://kenilworthian.blogspot.com/2014/05/review-of-pete-tamburros-openings-for.html

I believe that it is possible to see a fair portion of the beginning of Tamburro's book by going to the Mongoose Press site. Another possibility is Discovering Chess Openings by GM John Emms (2006).

https://web.archive.org/web/20140627114655/http://www.chesscafe.com/text/hansen91.pdf

Also perhaps look at:

https://www.chess.com/article/view/picking-the-correct-opening-repertoire

http://chess-teacher.com/best-chess-openings/

Opening principles are the basics, you don't need openings at this stage. If you decide to find openings, learning 3 moves in and using common sense is all you need.

That game is amazing, both sides played an awesome game.

You know, making a "game" in a line by entering sensible-looking moves doesn't work. You're not a GM, I'm not a GM, and no one on this thread is a GM, so that 36-move line is going to be badly flawed.

I don't, but anyway it has been played by two GMs, lol

Black is rated 2600+

True, but it would be much more useful to post a diagram with some of the theory.

https://database.chessbase.com/?lang=hr

be my guest