The above book is a classic, written by James H. McConkey. I bought a copy from Moody Press in the 1970s and still have it....I highly recommend this book!! This book made the most impact on me in my Christian life than any other. Mr. McConkey simplifies things to three points and expounds more thoroughly on those points in the book.
Basically, he says we need to have faith with repentance,
faith with surrender (or being yielded to Christ),
and finally to have faith with Christian love.
I was looking this author up today on the internet and read that a lot of people consider this book the greatest book ever written about the Holy Spirit. Hope you will try to read it!