My favorite "losing weight with endomorphs" video: https://www.youtube.com/watch?v=vWz9VN40nCA
I also have degenerative L5-S1 as do many lifters.
Be careful with lifting and consult a doctor first, some exercises like deadlifts and bent-over rows should probably be avoided. If you have bad form you can easily damage yourself further for life so it's best to start off with a trainer or, in lieu of that, reputable YouTube trainers. Most guys here love Scott Herman 'cause he's easy on the eyes, I find Vic Costa useful. The info's free so educate yourself.
Be careful with yoga. Personally, I don't attempt it when I'm over 200 lbs - balance issues, and the bigger you are, the harder you'll fall. So take that slow.
My exercise trifecta for weight loss is lifting, swimming, yoga.
Again, if you don't watch what you eat your results will be hidden by fat. If you like eating a lot, do so but by "clean eating" i.e. fill up on vegetables and lean meats.
There are tons of inspiring fat transformations by RJ members, myself included. Become one of them!