In a sermon on systematic theology, the minister said that your primary source of teaching ought to be from the local church. Any books that you research should be construed through what is learned there. If anything, you should view the local church with the same degree of scrutiny in light of God's Word. One might actually need to be more conscientious in keeping one's guard up in regards to the local church because a book is not going to play up to your existential weaknesses not directly related to the subject matter being addressed by the book nor intimidate you if you don't go along 100% with the manuscript on every secondary issue.