The bulk of the information on the Holy Spirit is found on the Godhead-related link elsewhere on this website. However I have added the Bible study on the Holy Spirit here to help people who are searching for information on the Holy Spirit on the internet. To find more fully treatment of this important study click on the following link: The Holy Spirit - Third Person Of The Godhead
This is a lengthy Bible study on the Holy Spirit and is well worth your time studying. You can find the same Bible Study on the Godhead section of this website.