I'm sorry to hear about your ankle

I imagine that's going to hold you back a little from some of the more vigorous exercising (running, etc), but I hope you are still able to incorporate walking, and definitely some arm exercises!! You don't need to spend hours in the gym to help you lose weight, losing weight is more about diet, and exercise helps tone and build muscle, which in turn burns more calories.
I find most enjoyment from walking right now. Fall is one of my favorite seasons, with the hint of cooler weather, the leaves starting to turn color, etc. Right now I'm addicted to finding walking paths and downloading walking music. If you can incorporate walking, see if you can walk around the block (or if you don't care to walk around the neighborhood, see if there is a paved walking path anywhere. One of my favorites is at a local township office, where they have a 3500ft paved path with gentle slopes up and down).
As far as dieting goes, what methods are you using? I do calorie counting, and it works for me because I don't like to give up certain things (I love carbs, proteins, fats, sugars, etc). As long as it falls within my calorie limit for the day, I can eat it. Weight Watcher's is similar, and uses a point-based system that uses things like fiber, fat, etc., to calculate it. The good thing about both of these methods is that you can really tailor it to your own needs (like if you need to go low carb, or low fat, you can still use the guidelines of the calories/points and choose foods that fit your dietary needs).
If you feel it's too overwhelming to look at numbers right away, just start by writing a food journal. Just write down everything that you eat (and if you want, also write how you feel afterwards...this can help pinpoint trigger foods for you later down the road). There are apps/websites that you can use, like MyFitnessPal, LoseIt, etc (which are free) through smartphones, Ipods, tablets, etc., or you can just use the standard notepad app to keep track. I find that a food journal is one of the most important tools in weight loss, because it keeps you accountable.
Lastly, don't beat yourself up if you slip up here and there. Give yourself some wiggle room from time to time, and this will let you focus more clearly on the diet. I recently learned this past weekend that it's okay to give yourself free reign occasionally, and loosen the grip on the diet. You don't want the diet to get repetitive and monotonous, otherwise you'll not want to do it for long. Spice it up however works for you (I was able to have an off-plan day and pick right back up with the diet the next day, some people may only do a single meal, etc).
Sorry for the late night rambling

Trying to distract myself from my fiance's bag of kettle corn lol! Hope this helps!