I was recently in the same boat. Just started teaching myself the ropes. I went with the switchable 15w - 30w radioshack iron. I like the lower setting for smaller parts. Plenty hot for the smaller joints, and less risk of heat damage. I like the 30W for those gigantic globs of solder grounding all the wires together on the pots. It will take FOREVER to melt through all that at only 15w, it's bad enough on 30w.
Also spring for the fanier clippy heat sink thingie. I started out with the el cheapo alligator clips and the heat sink that comes in the pack of solder probes/manipulators. They suck. Go for the nicer one with the red rubber handles (looks like a pointy tweezer).
Finally if I had it to do over again I would get this. In the end the difference in price would have been well worth it!!!
https://amptechtools.powweb.com/solder.htm
Weber VST is a great supplier.
His 63/37 quick set solder also rocks, but the regular radio shack stuff is good enough, just get the .022 diameter, and not the thicker stuff.