Is anyone here doing any online courses for school. How hard are they or are they manageable?

I keep seeing ads for online courses but wonder if any are really worth it. My life is too busy with work to be able to get to a school but wonder if I would be able to effectively get an Associate’s or a Bachelor’s degree online.I want to better myself but also need to hold down a job so I can do that.I know I would need to make the time and stay on top of assignments.