1) Learn the original languages, or, have a teacher/pastor who knows the language. That alone will clarify a lot of the misconceptions of Christianity.
2) Learn about the time period of the early church.
3) Read the Bible in the context of the above two. Also, read the Bible in context itself.
4) The Bible is to be the final authority on what we believe.
I am sorry,I guess I didn’t make myself clear enough for you to understand.