...and don't say "the gym".
A bit of background: I'm 5'9" or so. 36" waist for jeans. 2 years ago I was wearing 33" combats and walking a good 4 miles or so a day, mainly on hills, now the only exercise I get is the walk to my car. My job involves around 10 hours a day of sitting down. The big problem is with me, whenever I gain weight it's only on my belly, nowhere else.
I'm aiming to get back to the shape I used to be in (my cardio's crap these days) and hopefully gain some muscle mass/definition since about the heaviest thing I lift is my pedalboard.
The "local" gym is miles off and not particularly good, so I'm looking to keep to outdoors stuff and stuff I can do at home, which I'm having trouble finding. I've got a set of dumbbells and I'll be going over some of the exercises in the old Baseball for Dummies book I got a while back, and once the weather clears up I'll start doing some cycling again, but other than that I haven't got a clue where to start.
Diet isn't a problem, it's almost entirely natural products, plenty of protein. The only possible issue is I get through a massive amount of chocolate (72% stuff) a week, but I'm going to cut that down.
Given the above, is there anything I should be focusing on?
TLDR: exercises/advice for a total noob, that don't involve gyms. Go.
Check out dumbbell and barbell complexes. If you have a set of 25 lb dumbbells, and a standard 45 lb barbell, that's all you need.
These are a go-to workout for me if I'm not going to a gym or if I hit a plateau.
Essentially, you do a non-stop circuit of 5 exercises, and they can vary, but here's a good starter one:
curl -> overhead press -> squat -> row -> dead
So start with curls, do maybe 6 reps, then go right to press, squat, etc. One full circuit would be one set. Rest, then repeat 3 more times.
I usually start out with jump rope, and jump rope in between each two sets.
Then move to barbell. Another good starter would be something like:
dead -> upright row -> overhead press -> squat -> good morning
6 reps, 4 sets for starters. Increase the weight and reps as needed as you start to get used to the routine (both muscle memory wise, and endurance wise, you'll see what I mean).
These can be a real ass-kicker, and are a great no-gym, total body hit. This workout usually takes me about an hour.
Your diet sounds good, but I'd say leave the chocolate in there! It's one of my weaknesses, too. If you are not moving too much during the day, but incorporate something like this workout into a schedule, I would just try to shift some of your carb intake times and fat/protein intake times to make the usage more optimal.