I have a website where I offer shipping services. I need to implement UPS API in my website. I already did all the basic tasks such as create my UPS developer account, download the packages... Now I want to start with the project but I don't have no idea about how to start. UPS doesn't give any instruction or example about that.

P.S: I have knowledge in the basic language such as HTML, JavaScript, PHP, CSS and MySQL...

Please can someone help me with that?