I'm very new to LiveCycle and don't know much coding, so please bear with me. I know that there's an option to upload a filled-out PDF form to a URL through a Submit button, but I'm not sure what other steps I need to take to upload the form. What do I need to do on my website to actually get the PDF to upload here?
You need a program on your web server to recieve it. The type of web server you run will dictate which type of program to use. If you are not experienced with the server program I would hire someone to do it for you.