Knowing the way to meditate Lesser Heavenly Circulation is not enough. You can learn it in one day, but the experiences you start to have in the days/months after have to be guided, and only a qualified teacher or master can help you. I suggest looking for someone who can really guide you, and if you're interested in using the Qi for power it's better to find a master who can teach you how to emit. Otherwise you'll just be storing and storing, but not know how to emit the energy.