Get the longest infeed/outfeed tables you can find! The way I learned it was flatten one face on the jointer, use that face against the fence to square the edges, then thickness plane with the flat face down. If you order a bargain machine, test the beds for flatness with a dial indicator. Getting them within .001 will save a few headaches, and a local machine shop can regrind them for you. When my jointer burned, I've done it by hand since, with good results, but it takes a lot of patience!