Ok, now this is not something I do a whole lot of. I would love to be able to paint a ton of furniture because it's something I love doing, but I have very limited access to our garage and so I have to keep my projects to a minimum.
In our house, the garage is dad's territory and while I do get a corner of it to store my mural painting supplies, I can't take it over for art stuff. It's a compromise, but since my husband fixes all our cars and does all the household repairs, I can't really complain :D.
So considering all that, I have painted a number of pieces and every now and then done some big projects. Here's a picture of some kids bedroom furniture I painted last year. This was for 2 brothers with different interests that shared a bedroom. The mum wanted one side of the room to be spiderman and the other side pokemon. So I tried to blend the two in a way that still looked good.
Here is a good article on furniture painting how to's. He explains how it's done much better than me. My specialty is painting pictures on stuff.