Welcome to the community Ryan! Thank you for this frank feedback.
We’re working on adding more examples that could help you get off the ground quicker, but at the moment I don’t have a lot for you to work with. I know this isn’t what you want to hear, but I’ll pass this to our dev team that it’s something that would improve your use of the API.
Have you checked out the PHP and cURL examples in the community? Have you had trouble with them? Here are the links:
PHP Example
cURL Example
As for the file support, it’s something that is on our roadmap. That said, I don’t have an ETA for it just yet. We are aware that this is a highly-requested feature though, and I’m going to pass your vote for this along.