You're right in thinking memorizing openings is pretty useless.
Luck you, you're a hands on guy... one of the best ways to improve in the beginning is simply to play a lot of games. You need the experience of many games. Review your games for mistakes -- try to adjust your thinking too. After every move by your opponent were you checking to see what they threatened? When you consider a move, are you trying to find your opponent's most annoying reply, or are you choosing a move hoping he falls for a trap?
Solving tactical puzzles is the other primary method of improvement for all players up through a fairly high rating.
Eventually you'll want to get into a book and learn some things, but tactical puzzles and playing games are two good ways to begin. You should also know how to checkmate with a queen and king vs a lone king, and how to checkmate with a king and rook vs a lone king.
So I've been learning chess, and I got all the rules down and how the pieces move. However I'm lacking in strategy and tactics. I did win one game of Chess on "Chess Titan" (came with Vista) but I think that was a fluke.
I'm one of those people who learn best by doing things rather than listening to lecture or reading books after books etc. I don't know why, If I do something by hand and get it right, then I can see the process of how I go it right.
I'm not sure is memorizing a bunch of openers is the right way to go, I won that one game of Chess by basically choosing two possible endgame I'd like to see happen, and then trying my best to make it happen. (One of them was the two rook, other was Queen and Rook). I guess I'd like to be able to anaylize the board and then make my best move from there. That way I can be flexible in my tactics.
So, any suggestion?