The main thing is to start a Dream Journal. After all you want to remember those Lucid Dreams when you get them, don’t you? It has more purposes, but that’s one of them. If you want to know more about remembering dreams your could go to this topic.
Once your dream recall is fine, or maybe it is already, you can try to use a technique to induce a Lucid Dream. You could read the How to Choose Your Technique topic to choose the technique that fits you the best.
Furthermore you could start doing Reality Checks during the day. The point of this is that it will get a habit and you will hopefully do it in a dream too. Then you will realise it is a dream and you’re lucid.
I merged your topic into this topic, maybe you can find some tips in here too. It’s a good thing to also read the main site, like LordAlexG said. There are a lot of techniques explained well in there.