Compound joinery (your hip roof framing) is not something that can be quickly explained. As Mo stated, if the hips run at 45 degrees in plan (what's called a regular hip) it becomes a whole lot easier. Stick framing regular hips is very easy. Timber framing regular hips adds some complications, and irregular hips adds even more.
There has been quite a bit written on compound joinery. Look for info on the Hawkindale angles on the TFG website, articles by Will Beemer in the Timber Framing Magazine, old books on steel squares (Siegle's?), A Roof Cutter's Secrets by Holliday, and various texts written in German, French, and Japanese.
Good luck, and feel free to ask more questions.
