Ok...I know there's a tutorial now but I feel I need to explain the exact steps that I take because it almost never fails for me.
1:Go to sleep tired
2Wake up 5 hours later
3Write down your dreams that youve just had(Very helpfull!)
4:Stay awake for 60-90 minutes(90 reccomended) writing and reading in your dream journal, and doing a lot of reality checks, and staying focused on dreaming(focused but not stressing)
5:Go to sleep and(*) think about your last dream, or imagine walking around a dreamscape. Nowhere special, just walking around anywhere
6:keep thinking "I am dreaming" but don't stress yourself
Well, from my experience these steps, followed exactly, give me an almost 100% chance of having a lucid dream.
(*)you may try any method at this point but I have given the method that gives me the most success.