I played over the entire book of BCE by Fine.
You need to know K&P and also r&p endgames cold.
You should know principles of endgames.
Can you mate with B+N against K? You should play that until you can visualize the squares and drive the king to the side and then to the correct corner and finally mate.
You should learn all the basic ...
...c5 followed by ...Qa5 is indeed a very important trick in the Pirc defense in order to reach a dragonlike pawn structure.
However, it can only work after you have developed your bishop to g7, adding pressure on the dark squares.
rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
1. d4 d6 2. e4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Be2 c5 6. dxc5 ...