How do I get better at scrabble?

I like to make my own double-letter squares. Look for places you can play one word next to another, not crossing it. For example, picture the word "INTO" running left to right. If you play the word "NOON" crossing it you only score 4 points, but.... if you play the word "NOON" right under it you get to score "IN", "NO", "TO", "ON" and "NOON" you get 12, tripling your score. Granted that's a lousy example, but it's the principle.