I want to learn Chess systematically from the beginning. Although, I have 700+ Elo on chess.com but I think, it is just a random play: sometimes luck and sometimes 4 moves checkmate (Bishop and Queen) helps or sometimes opponent is naïve than me or opponent resigns without playing and I get points.
Recently, I was reading Pawn Structure Chess by Andrew Soltis (and then planning to read Jeremy Silman - How to Reassess Your Chess) as I thought pawns are important part and their movement should be done with conscious choice and not treat them as useless chess pieces.
But I can't understand all notation while following Andrew Soltis' book:
I e4 e5
2 Nf3 Nc6 -> What does N mean?
3 Bb5 a6
4 Ba4 Nf6
5 o..o Be7 -> what is o..o?
6 Rel b5
7 Bb3 d6
8 c3 o..o
9 h3 Bb7
10 d4 Re8
11 Nbd2 Bf8
12 a4 h6
13 Bc2 exd4 what is x in exd4?
14 cxd4 Nb4
15 Bbl bxa4
16 Rxa4 a5
17 Ra3 Ra6 what is a in Ra3 and Ra6?
18 Nh2 g6