This little book is an effort to see the involvement of the Holy Spirit in the initial period of the early church. We will not be going into as much verse by verse analysis as perhaps some might desire, but we will, along with some textual analysis, be analyzing what the chapters present to us with special attention being given to what Luke is telling us about the involvement of the Holy Spirit in the accounts of action that compose his book. We will try to piece together what the complete picture is and explain why some of the details as given by Luke's treatment of the Spirit are as they are. I will be using the chapter outlines as contained in our first Acts study book in 1985, but the text and questions are new. I will not stop to give full defense of comments made regarding Holy Spirit baptism as it is recorded in the various chapters of the book of Acts. That conclusive and elaborated defense is presented in our book, Except One Be Born from Above, which the reader is encouraged to consult. This study book is based on the conclusion proven in that book that when anyone in any century enters the kingdom, it is by baptism in water and in the Holy Spirit (John 3:3-5). If any man has entered the church-or, kingdom-he has entered in the way that the apostles and all others entered in the first century. All cases of kingdom entry recorded by Luke in Acts are the same in the "essentials."