Fireman93514's advice is good.
Picks are a matter of personal taste, but thin picks are usually appreciated most by beginner players. I like Jim Dunlop nylon picks. They have raised bumps to help you grip them. Jim Dunlop has a line of picks called "Max Grip" that are really grippy bumps. I like 0.88mm, but many strummers prefer thinner picks than that, such as .50mm. I really wail on the strings sometimes and appreciate a thicker pick that I can abuse the bass strings with when doing a boom-chuck country song.
Good luck and keep up the good work.
Welcome to Chordie the both of you.
- Zurf