Some commentary by a long time lucid dreamer!
Don't try to control your dreams. This is really hard to do. Just achieving the simple bliss of, "Oh! None of this is real!" should be the first goal. Control of the dreamscape comes at more advanced stages (I've found anyway)
Don't do anything in your dream that would be karmically uncooth to do to a real person. I know this sounds kind of odd but you still receive the karmic effects of activities even if they are in a dream. If you take to lucidity and dream of going on killing sprees (...) or being purposefully unkind to dream-entities. No bueno.
Doing simple, seated meditation before bed will help ease the mind into the scape. It might not make you more likely to go lucid but it will make your sleep/dreams better in general which can help a lot.
Smoking Cannabis frequently ruins the part of our brain that dreams. I don't know what this is biomechanically but I've felt this over the last few years. You end up having the same recurrent dreamscapes and themes all the time. I theorize that we need dormant Cannabinoids to be able to dream properly and smoking disrupts this.
Generally people who are depressed/anxious take to dream-divination better than the average person. Someone that's always trying to escape their personal reality at some subtle level will have a natural inclination towards dreaming. If you find yourself in this position; rejoice! It's the pain that leads through the gates of Heaven!
Anyway. Great post. Cheers!
Thank you! Great input!