re: Recommend a good book about chess

That's what everyone says. Lower level players need to concentrate mostly on tactics. To work on that I have been trying to do at least 10-20 tactics puzzles a day either using chess tempo or the chess.com app. I just find that it keeps things interesting if I jump around a little.

Also I wanted to learn just some very basic things about openings, so I'm not getting practice with a bad scenario. I only play 1. e4 as white. e5 as a response to kings pawn game as black. And the Indian in response to the Queens pawn game. That handles almost all games I play at my level. I'll worry about the rest of the opening theory later when I get a better grip on my tactics and basic strategic themes.