Apologetics is very important. There are different schools of thought on apologetics.
Five Views on Apologetics is probably a good foundational book to read to understand the differences in apologetics.
For instance, the people who are saying "The Bible and the Bible only!" are either pre-suppositionalists or Reformed Epistemologists. There are three other main schools of apologetics. I would highly recommend you start with a book like this, which has Stephen B. Cowan and Stanley N Gundry as editors, and published by Zondervan.
Reasonable Faith, by William Lane Craig, and a bunch of other books by him are quite helpful.
Is God just a Human Invention: and Seventeen Other Questions Raised by the New Atheists Edited by Sean McDowell and Jonathan Morrow is a great book to learn to defend Christianty to atheist.
To Everyone An Answer: A Case for the Christian Worldview, edited by Francis Beckwith, William Lane Craig and J P Moreland has a bunch of good essays on many topics on apologetics.
One final book that I have not read, but was recommended to me is Why Good Arguments Often Fail, by James W. Sire.
I have some other books, Seminary and doctoral level, if you are interested I can also post the names. I use them for reference, they are a hard read!
I think it is wonderful you are interested in pursuing apologetics, and if there is anything I can do to help, let me know.