Hi
I suggest you have a clear purpose of what you want to do with the knowledge before beginning to activate. Each activation session should have a specific, tangible purpose so that you know what you want to be able to achieve by the end of it.
Remember also that activation is simply getting active with the material. You are retrieving it from your other than conscious mind and this is done in layers. A good activation thread worth looking at is:
http://www.learningstrategies.com/forum/ubb/Forum8/HTML/002346.html
Remain physically and emotionally open and remember to use the NOPS. The "flow of knowledge", as you call it, will come.
KWLee
