Kid: Laser Pico, mini fish, snark, optimist
Small adult (under 175): Sunfish, laser, holder 12, holder 14
Larger adult (over 175 and sometimes crew): Lido, capri 14.2, capri 165, precision 15
If you are a good swimmer these above are all pretty great boats to start with.
If you abhor getting wet, try a keel Lido, or a keel capri 14.2 or capri 165 (they are hard to find because sailing schools usually are the only ones who buy them).
The Precision 15 has a keel version also. It's a great boat to learn on, I did. Not that I abhor getting wet, I just like to bring a sandwich, a cooler full of drinks and a camera with me, none of which I want to lose overboard.
Anyhow I can recommend the Precision 15K.