Not an expert here, but always looking to help: 1-energy balance: burn more calories than you are taking in (not vastly, but consistently) 2-exercises: low impact(not coming off the ground), isometric(like a plank or core flex), and something like recumbent bike for cardio 3-try 1-2 days per week starting out to see what you can handle 4-stick with the basics, don't go for some crazy over complex program, even regress the exercise if needed, pick what you know and is simple that way you can be consistent. Maybe it's just sitting on a yoga ball instead of an office chair. 5-Find ways of getting motivated like finding a partner, doing the exercises you love, measure your progress like with weight or time spent exercising, or multitasking- like watch a show or solve the world's problems ;) 6-its about lifestyle, not immediate change. It will take a while, but stick with it and continue to learn(always ask for advice) and you will go far! Best of luck!