So that development can continue without worrying about the b pawn. The bishop usually comes out after ...Be7, ...Nbd7, ...O-O, ...Re8, ...Nf8.

better for the lower rated players to ask questions once in a while, I like it

if Nc5 Bxc5, then Qxc5 and white has a very strong unopposed bishop on g3

minority attack!

shuffling usually means trouble, for the shuffler!

What I mean is that you don't just trade no matter what. It depends on the position. Here the trades limit Black's counterplay heading into the minority attack.

timing is everything

black has a very passive position

Jkarp, the OTB games, last up to 6 hours! (except this tournament this was the two day schedule so this is only game that is G/60; the rest is 40/2 SD/1) you get 2 hours for the first 40 moves and a bonus of 1 hour when you make your 40th move. I recommend you to start playing over-the-board at a local tournament, it helps develop the skill called "visualization" where you can imagine the pieces moving in your brain instead of having to see the actual position.

intermezzo = in between move.

inbetween moves, always fun to play an inbetween move is a zweischzug (inbetween move in German) zugzwang means move compulsion in German, which means that the fact that you have to move each time it is your turn weakens your position. Being in zugszwang is the chess equivalent of being tied up in knots, any move make harms your position