Yvsa,
First, I haven't yet responded to the threads about your health. Sorry, good sir - I've been preoccupied. I'm really pleased to hear that the rehab is coming along, and hope that you and Barbie are still on speaking terms once the rehab's more complete

As my kids have found out to their desperation, acting as a coach does have a way of bringing out our inner Nazi.
Second, once you've got your body back to essentially functional order, you and others might want to check out
www.simplefit.org.
EDIT - Tom, I edited the URL to .org not .com One of the CrossFit people designed that site as sort-of a starting-out site for people who for whatever reason can't do a full-blown workout, but want to get things underway. It uses the same CrossFit methodology of training your muscles hard enough to train your heart/lungs at the same time - and the only piece of equipment you'd need would be somewhere to do pullups. I sometimes go (in off-hours) to the local park, and use the monkey bars.
CrossFit is very intense for the fire-breather elite guys, but is also very scalable - on the website, they've got good video demonstrations of folks of all ages and fitness levels doing appropriate variations of the same movements.
Essentially, they focus on functional movement - stuff we all do in our everyday lives. Everyone needs to be able to squat safely, because we all get up out of chairs, or off the toilet. Everyone needs to be able to pick up a moderately heavy object from the floor (grandchild, suitcase, sack of potatos), and sometimes put it somewhere high. The functional movement gurus tell us that we get better at what we practise ... so we might as well practise the stuff we need to do in daily life.
This contrasts sharply with, say, bodybuilding. When in real life do you put a weight on your elbows and pull them up, working your shoulders? When in real life do you hold your body rigid, lean over, and extend your tricep while holding a weight? Bodybuilding is very effective at building muscles for display, but nothing like so good at building a functional body for use. For that, you need the big, multiple-joint movements like the squat, deadlift, shoulder press, pullup, and dip ... that are really the movements that combine in different ways to give the motions used in daily life or sports.
A CrossFit body doesn't look like a bodybuilder's body. In fact, the aesthetics are very secondary (unless you want to act in The 300). A well-trained CrossFitter, in contrast, looks like a capable athlete - a combination of 800m runner, gymnast, and weightlifter. Most of the men are about 165-185 pounds, with some of the tall guys obviously going heavier than that. But there are guys this size and my age (45) doing 5:30 miles, and deadlifting 400 pounds, and ripping away 35-40 pullups without a break, and lifting their bodyweight over their head in a snatch or overhead squat. The women, frankly, are gorgeous. They look like real people (not bodybuilders!), but oh my. Don't tell my wife I said that. But the looks thing is secondary - the focus is on performance. Measuring performance, and improving what you can do.
I'm far from the high level of physical performance of some of the folks - see me in a year or two. But it is instructive that various parts of the US and Canadian militaries are increasingly moving to Crossfit for their official PT. A major CrossFit certification happened at the military base just outside where I live; three such certs will have happened, training Canadian Forces trainers, before the year's out. And on the CrossFit website, there's a lot of talk by US forces people too - Marines, SEALS, various folks serving overseas - who are doing this because it prepares them for what they need to do, better than anything else they'd tried.
Anyway - I'm sounding too much like a disciple. I got started in this because my daughter, who's a rower, asked me to help find something effective for off-season training for her. As I write this, she's off at the Royal Canadian Henley Regatta, competing in what amounts to the North American rowing championships. Boats from all over the US and Canada. There's no way that she could have qualified last year ... she was at essentially the bottom of the club's performance ladder, and was embarassed.
Not anymore.
t