The ONLY Book to be reading is the True infallible Word of God! This that you write of is tapping into the realm of demonic mysticism. The Bible speaks of an Abyss between the dead and the living, and that once crossed over, one can never return! These spirits that you are referring to are of a demonic nature, and can take on the "characteristics" of another. The Bible talks of this where the devil can present himself as "an angel of light". Yes, spirits (demons) look for "houses" to dwell in, this is to carry out evil deeds, as in the case of the demon-possessed individual. In the same sense, the Holy Ghost dwells in man as well, but only to carry out God's will in the earth. Once we die, we return back to God from whence we came. I don't believe that there is anything that states what happens from that point, accept for what Jesus says in the gospels concerning the matters of eternity.
The Bible also states that to be absent from the body, is to be present with the Lord. I believe that we need to try and meditate on the things of God, instead of worrying about petty things that will not bring souls to the saving knowledge of the truth (Jesus Christ and Him crucified).