Scripture is a good place to start.
Some encouragement to read Revelation:
The power of God's revealed word:
"We need not stand upon the Authority, nor Title of it that holds out the Penman; it being of such a divine stamp and Majesty, doth carry Authority in the bosom of it, that if any Scripture hold forth the Sovereignty, Majesty, Justice, Mercy and Truth of God, to the comfort of His People, and the making the hearts of His Enemies to quake, this Scripture doth it."
The blessing in it:
"We have the commendation of this Book, ver. 3 to stir up folks to make use of it, because He knew many would be scare at it, and be ready to let it lie besides them as useless and unprofitable; whereas all Scripture is given by inspiration of God, and is profitable, etc. 2 Tim. 3.16. Therefore this is added, Blessed is he that readeth; that is, this Book is not a thing to be spoken of only, and not to be read and studied: for, the Seal of it are opened; and blessed are they that read it. It's a happy and a good thing, soberly and humbly to read, and to seek to understand it:"
- from James Durham's "Commentary Upon The Book of the Revelation"
The Reformers and Reformed confessions are a good place to start. They did get the Gospel right, so they might not be too far off on the rest of it...even if they are slightly.
The Soul and Essence of Antichrist if false religion pretending to be Christian, when it is nothing more than
a system of apostasy.