Since there are a lot of repeat threads in here about "What is the best wax", "How should I wax my car", "Swirl Removal?", "How to properly wash a car", etc etc. This can be a first stop for getting information you may need.
Here is how this works. Everyone choose a subject they wish to explain (that they know very well) and post it. Since there are so many different techniques for detailing a car, repeat posts are fine.
I will do some write-ups later when I have some more time.
But for now, go at it. Happy Detailing!