I'm Completely Lost getting

 Hi, there.

I'm homeschooling my two children and decided to use the Khan Academy fro math and grammar this year.  I feel like there are no definitive instructions for setting them up for success, as I have no one that I can call for help.  They are on, what appears to be a mission, but I'm not certain how to simply click on a subject and have them learn it.  I really just need a complete walk-through. they enjoy what they are doing but Ithe fly-by-the-seat-of-my-pants feeling that I have right now due to not understanding the website is very unsettling.  My goal is to have a good clear understanding/working knowledge of how to find out their needs and then have classes set up accordingly.  Please help.  Thank you!