Try drawing up the energy from the feet up through the legs using a sponge tequnique. That is one of the more easy tequniques and could be a good starting point. It is hard at first and you can develop a lot of tension trying to visualise and move the energy. (I know I keep mentioning Astral Dynamics in every post I make but,) if you try reading Robert Bruce's descriptions just before you do the teqnique it can help. Looking throught the pictures in Astral Dynamics it can help visualisation a little more.