Another great ebook tutorial on psionic skills can be found on PsiPog.

This book is available in PDF format for both reading and printing. It covers following topics: Philosophy of Psionics,  What is Psi?, Introducing Psi, The Infamous Psi Ball, Constructs, Shields, Empathy, Telepathy, Psychokinesis, Out of Body Experiences, Definition of Terms and some more.

Well written with images for better understanding. A must read for anyone eager to learn the skills.