Please note I don't have a cake turner thingy and I never taken a class. I'm learning as I go.
Welcome! Cakes are a lot of fun and I think you will love working with fondant! This is my favorite fondant recipe right now. I usually have the ingredients on hand, and everyone who has tried it says they love it. Well, except for my mom, but she hates all fondant. :)
A proper turntable is amazing to work with, but a lazy susan is certainly better than nothing :) Cake turntables are raised, can be tilted and a good one can hold a huge tiered cake, a lazy susan is usually flat and I would never try more than a 1 tier cake at a time on it.