@sharkema There is no easy way to learn any opening. This particular variation has the advantage of being a surprise for your opponent (even if they saw this famous Carlsen game, they definitely don't know how to play this for white properly) at the cost of its objective unsoundness on the theory level. In practice, especially in blitz, it is perfectly playable, you just need to know the key lines and learn to calmly defend with a space disadvantage if it happens that your opponent doesn't fall into traps.
Basing on lichess opening database, your opponent fell in the MOST COMMON trap in this line 7. d6? after which you just needed to deprive white of castling rights by 7... Qh4+ (if 8.g3? then 8... Qe4+ winning a rook), develop and try to exploit white's lack of coordination and weak king. This position is already objectively better and maybe even winning for black. Just analyze your games, see where you made mistakes, and you will grasp the main ideas eventually. Your moves 5... c5 and 6... e6 are perfectly fine by lichess statistics, so you can stick to them.
This trap is so common that even NM with 2500+ rating call fall into that: lichess.org/jlquc189 Probably you can win a lot of points just by remembering this line.
Basing on lichess opening database, your opponent fell in the MOST COMMON trap in this line 7. d6? after which you just needed to deprive white of castling rights by 7... Qh4+ (if 8.g3? then 8... Qe4+ winning a rook), develop and try to exploit white's lack of coordination and weak king. This position is already objectively better and maybe even winning for black. Just analyze your games, see where you made mistakes, and you will grasp the main ideas eventually. Your moves 5... c5 and 6... e6 are perfectly fine by lichess statistics, so you can stick to them.
This trap is so common that even NM with 2500+ rating call fall into that: lichess.org/jlquc189 Probably you can win a lot of points just by remembering this line.