Few.. Ok lol broad topic =). But I'll try.
Ok well first off, based on where you want to position the ball, you can move along the base line from the middle of the court to the alley edge to try and get a better angle on where you want it to go. Well for example, the further outside you go, the further you can say "cross-court" the ball will go, and vise versa as if you go close to the middle hash, you hit further inside.
Stance is an issue for the serve you are trying to perform, in which I will add some videos at the end.
As for tossing the ball, no real specification here, (Or maybe depending on your serve or your comfort), but I like to toss the ball almost directly over my head and maybe even a little onto the court so I can kind of lean in to it and add power and be in a stance that I can be ready for the return.
Ok for the videos, I would look at some fromYoutube, especially from serious makers like FYB2007 and Webtennis, who both analyze the aspect of the serve, as well as they do with your overall gameplay like forehands and backhands. They also provide you with things to understand and practice on, which obviously makes a better tennis player at the end. Heres their Youtube Channels:
FYB2007:
www.Youtube.com/fuzzyyellowballs
Webtennis:
www.Youtube.com/Webtennis
Also, here a few video of FYB2007's Kickserve analysis.
http://www.youtube.com/watch?v=F7z7vEVqz1A