John's definitely my favorite of the four gospels, so I'd definitely recommend reading that one. The rest of the new testament is good to read too. If you're just looking to read a few and not all of them right now, I'd definitely recommend starting with Romans, Ephesians, and Hebrews.
Also I do need to learn more on Roman history at some point, there's so much.
Just curious, what translation do you use on Bible Gateway?
Oo, Revelation. That one gets to the crazy stuff around chapter 6 I think. I won't recommend you don't read it yet, but you'll probably have no idea what's going on without a lot more biblical knowledge or a good teacher. Not that any of us really know everything that's going on in that book but that's ok XD
Yeah, so the whole thing about the Protestant reformation was that the Catholic church said faith + works for salvation, but Luther was all like "but the Bible says that it's faith alone" and so there was the huge split and whatever. But protestants still basically make it faith + works because they say you can lose your salvation if you're intentionally sinning or not following Jesus hard enough or whatever. The line between saved and unsaved is completely arbitrary at that point of course, and they don't have good scriptural evidence. But (most) Baptists believe that you can't lose your salvation, and there's a lot of scripture for that that I can share if you're interested, but basically it's because Jesus died for our sins once for all and that covered everything, even sins after you're saved.