[jwyss234]

I agree with Bo Ttef about picking a line and then focusing on the core characters like Duke and Snake Eyes to see how you feel about it. If you have any collectible shops or comic book stores that sell used toys, check them out for used Joes. Part of what got me into GI Joe was picking up a 25th Anniversary TS Duke on a whim. I liked the figure well enough so I started checking more LCSs and came across a store that had pegs of 25th Anniversary figures for around $5 each. I made off like a bandit with cared figures of a lot of the core characters.

I would also recommend the following sites:
Generals Joes – A blog about the importance (or unimportance) of little plastic men
https://www.yojoe.com
Generals Joes has a lot of reviews and Yo Joe has a database of all figures and vehicles.