This will be my first cake, ever =)

If I made a yellow rectangle cake, and covered it with flavored and colored fondant, would that be edible...? Well, I mean, is fondant like, thick, and not a good thing to cover a cake with? I always find that when I frost a cake, its clumpy, and doesnt really work too well. So that's why I'm thinking about fondant, if that won't work, is there any other ideas I can use to make the cake smooth?

Welcome to Cake Central. Here is a link to a lot of information about buttercream.

fondant is quite tricky, but it is edible. Try this link first:

http://forum.cakecentral.com/cake-decorating-ftopict-19948-buttercream.html

We use fondant alot and it just takes some practice to get it smooth. Just remember - if your cake is bumpy and lumpy under the fondant, it will show through. And yes - it is edible but wilton does not taste good.

We use fondant alot and it just takes some practice to get it smooth. Just remember - if your cake is bumpy and lumpy under the fondant, it will show through. And yes - it is edible but wilton does not taste good.