Mike - hello and welcome. If you want to build your confidence (and abilities) start off with a Kwickset deadbolt of Master #3. Use light tension, and scrub a couple of times...this will usually set at least two pins in the #3. Then follow up with the hook to feel and set the others.
Personally, I have found the half-diamond to be almost useless (BOBO hunkers down, ready to be attacked)
Purists will tell you that scrubbing is not picking. But for a noob, the more time you spend inside the lock, the better. Eventually you will want to move on to single-pin picking, but for a confidence builder - scrubbing may get you to that magical "click" a little quicker.
P.S. stay away from American
