Good morning

Signed up about 10 minutes ago completely brand new here. I don’t see an area to show me what I need to work out at home. I have a set of dumbbells that are 6 pounds and I do have some exercise bands any information on that and where we can purchase equipment? Also, are there videos specific to legs. Glutes and building leg strength for somebody that has extreme pain in both knees so unable to do lunges or squats due to weakness in the legs?