Good for you Philip!
There are many body weight and light weight exercises you can do.
Of course, a good program depends on your goals and limits.
If you send me some more information (goals, body weight, height, any injuries, time availability per week) I'd be happy to create a program for you.
With Alicorn's permission, I'm resurrecting this thread.
I'll start off with one of my own: What kinds of exercise can I do at home (I do have 5- and 20-pound weights), and what are good ways to get motivation to do so regularly?