Hi! The files can be uploaded via FTP or cpanel, the content editin can be a bit tricky, if you don't have CMS you have to edit the files directly. I you are not familiar with programming it's not a good idea, but i can show you anyway. The payment integration depends on what you have, it can be 2 minutes if everything is all right. Plese contact me so we could clarify the details. Regards, Attila Bakos