I'm just getting started and wondering about the best way to sell

Obviously Craig's List is easier as I don't have to deal with shipping but I live in a relatively unpopulated area and feel that I could probably get better prices through Amazon and such. Is this something that I just have to figure out by experimenting or does someone have an experienced opinion on this? Also welcome to the first post.

Update: Nothing has sold on Craig's List but I just made my first sale on Amazon! What's more, I bought a small lot of items and just sold one of them for the price that I paid for all of them. Booyah! Now to figure out this shipping nonsense.