I always analyse my games and I think it's a great way to improve. Even when you lose, you'll probably be surprised to see that you made some really good moves and it will cheer you up. You'll also see your mistakes and sometimes it's only small things that makes a difference. With the computer help, most of the times I only take few minutes to review my game.
Agreed and I'm actually going to do that here in a few minutes, review a game I just played a few hours ago, I won but I still want to see where I could improve.
Also if you're a beginner, I'd say just focus on your blunders (the computer usually shows these in red), that's usually where you either dropped a piece, or will lose a piece tactically, or get checkmated. The reason I say that is because the other things are usually too complex for beginners to follow and most don't have enough Chess knowledge to put long computer lines/variations to good use.
I always analyse my games and I think it's a great way to improve. Even when you lose, you'll probably be surprised to see that you made some really good moves and it will cheer you up. You'll also see your mistakes and sometimes it's only small things that makes a difference. With the computer help, most of the times I only take few minutes to review my game.