You can always check out sivason's Dream Yoga Course. He incorporatees many meditation practices which support a wide range of lucid dreaming skills (Raising awareness/mindfulness, Entering into WILDS & transitioning, stabilizing dreams, enhancing visualization etc.)
Any type of mindfulness based meditation will help greatly as well, and I read a study at one point which supported this. In the study, there was an increased LD count per month among those engaged in mindfulness based meditation practice.
You can look into buddhist style medtiations such as samatha (concentration) as well as vipassana (insight). You can definitely find great instruction from a google search. I've read accounts of vipassana practicioners haveing good success with WILDS while keeping a very steady practice.