There are alot of different techniques you can try that will help you induce lucid dreams. I will list all the techniques i know in the order of easiest first, the techniques have been tested and verifed by a man called Stephen LaBerge. Stephen LaBerge is a leader in the scientific study of lucid dreaming.

Beginner Techniques

DILD Technique
FILD Technique
MILD Technique

Intermediate Techniques

WBTB Technique

Hard Techniques

WILD Technique