When you're on a particular lesson that you want to download within the Core Learning System, click the "Download Lesson" button to download the MP4 to your computer. Unfortunately, your message is so cryptic that I have no idea what you're talking about. When it comes to songs in the Song Library, you cannot download the licensed music or notation.
It would help if you'd specify exactly which lesson you're referring to. Please realize that there is nothing called "guitar basics" on this site. There's Guitar Fundaments 1 & 2 (one by Lisa, the other by Anders) that's part of the Core Learning System. Is that what you're referring to?
"Whatever you are, be a good one" - Abraham Lincoln