Hallo!

Welcome to the forums Sniper!

To answer your questions:

1. There are stages for reaching lucidity. I'm not sure to what you are referring to here. There are the stages of dream recall, awareness, and lucidity. Or the actual lucid stages of low, medium, and high-level lucidity.
2. Well to comment, you were probably dreaming about water, but just forgot about it. Another possibility is that you sweated a little and your subconscious exaggerated the moisture. Wait… your arms and NOT really wet when you wake up right?
3. It’s different for everyone. Some people are tired out after a LD, while others feel pumped with energy like after a goodnight’s sleep.
4. There are natural lucid dreamers who have been LDing every night from since they could remember. But anyone with determination can become a frequent LDer.
5. It’s usually good to have good dream recall (remember one full dream, per night, every night) before you attempt to become a lucid dreamer. There are several ways to improve dream recall but the most important and probably only thing you need is a dream journal. Record all of your dreams somewhere and soon you will find that you are remembering more and more dreams. Trust me, this works great.