So after reading many of the tutorials I still felt confused about how to Lucid Dream.

Basically, I am confused on how to start these Dreams.
Do i just go to bed, get into a comfortable position , wait till I dream and do a reality check?

Is a good reality check to count the number of fingers you have? I heard if you are dreaming you may have more or less fingers.

- Last night I slept for 5-6 hours then woke up, as usual i go to the toilet. When i get up my vision is really hazy , and somehow manage to stumble to the toilet and back to bed, falling back to sleep instantly.

* Usually I feel like i'm watching myself in a movie whilst dreaming.

(probably off topic) Anyway once i fell asleep i had this dream and i was standing outside my house and there was some evil guy inside .

All of a sudden I pulled out a thermal imaging gun ( I had recently been playing Call of Duty Modern Ware fare 2 ) and saw the "evil" thing hiding behind my front door.

I felt as If i was coming to my senses and realized that I was in a dream somehow, because as i was looking through the thermal gun I zoomed onto the "evil thing" and he was wearing shoes. To be specific "nikes" I could see the big Nike tick , I really wanted to laugh.

But then it ended, Suddenly i forgot what just happened and my dream carried on as if I was watching a movie as usual.

Has this any relevance to Lucid Dreaming?

I really want to have a proper LD where I can imagine things and make things happen

I know it may take a long time to master.
Please tell me what you do to prepare to LD. I mean how do you know that you will dream that night?