Maybe I've missed something, but I couldn't find any questions about this already. If anyone knows of any then it would be great if you could post the links.
I know there's loads of massive opensource engines out there already that it'd be really easy to use, it's not a problem of needing one, but I don't like not knowing how the things I want to use work. But looking around, I can't find anything on it. I'm not some masochistic nutjob on a crazy lone mission to make an engine.
I've done all the basics of OpenGL already, I can hardcode it to draw something, I don't need a complete runthrough from first starting it, but I haven't a clue how to move that on to rendering a model, and nothing anywhere seems to explain it. I've tried to see if I can find anything on the structure of any file types to see if I could figure out myself how you use them to render the model, but that was a bit of a dead end.