Black magicians handbook sensing energy

I just got conner kendall new book for beginners started reading it first is exercises for sensing and feeling energy.ive dabbled some and can sense energy and feel it i think ive felt it building up ive felt the presence of beings ive called on.was wondering what other people would describe the feeling of energy was like for them and has anyone else read this book?im looking to go beyond just dabbling and start to dive into it im taking it step by step working through the exercises although im on the first one have to start somewhere.