Welcome on our forums! And thanks for your congrats
About knowing the fundamentals: I suggest you to read the website first, notably Theoretical & FAQ.
If you then want to dig more in the details, I suggest you the protocol. It is still under redaction, however it starts to reach a satisfying maturity. And you can have a look at the concrete HTTP API uCoin will handle in its early days.
I know you might still be confused after all that, but we do not have a real “guide” for newcomers yet.
If you have some questions after reading, do not hesitate to post them.
BTW, may I ask you how you discovered you project?