Hey Waluigi!

In dreams you tend to go along with anything that is in the dream, wether it is vivd or realistic. You find the most stupid things perfectly normal in a dream, so a reality check is a good way of finding out if you are dreaming or not.

The laws of phisics and reality don't apply in lucid dreams, so it is possible to do anything you can think of. Some people are able to create entire landscapes and worlds in lucid dreams, but it can take a while to develop enough dream control to be able to do so.

As for how much time passes in an LD compared to reality, studies have found that in most cases dream time is almost identical to real time, but as irishcream said, it is possible to spend days inside an hour or two of real time.

As for the learning proccess, it is on going. I have had four lucid dreams in the 3 months I have known about them, but I have only really started to try to do it acively in the past month or so. I should expect it will take a good number of years before I can have regular lucid dreams.

Good luck Lucid Dreaming!