If your disconnecting the battery (to save it going flat), make sure the car is unlocked (if you garage is secure) and that you have the code for the radio. Nothing more infuriating then finding out you don't have the code! There are threads on here which I think you can find out the code for your radio, if you don't have it or lose it! If you don't want to disconnect and reconnect your battery all the time and have power going to your garage, you can buy an Optimate trickle charger (approx £40 -£50) which you leave connected to your battery. It continually checks the condition of your battery and keeps it topped up!
Personally, unless your Puma is going to be off the road for years, I wouldn't bother putting it up on axle stands. It's not worth the hassle and not of any real benefit for short time storage. When you take your car out of storage, check the tyre pressures as your tyres will lose pressure with standing. Starting your car periodically is a good idea. Let it run up to normal working temperature and dip the clutch a few times to prevent it from sticking. Depending on where your garage is and what the weather is like on the days you do this, I would drive it out the garage and let it tick over outside. This way, you allow your oil to circulate the gearbox (as you've driven it out the garage) and won't have a garage full of fumes! As long as your garage is level, leave the handbrake off to prevent your rear brakes sticking on. If its not, this is the wheel chocking idea, already mentioned.
As you've just had your rear arches done, I would remove the rear arch liners and give your rear arches a good underseal to try and prevent rust attacking your new metal! If your Puma is going to be stored through our next winter, I would either check the strength of the anti freeze or make sure you've got enough antifreeze in!
Most of the things I've mentioned above is what I used to do for every winter storage for my Lotus Elise. I used to give it a dam good wash and polish as well prior to storing it away for the winter - but that was mainly for my benefit when I looked at in the garage! Much more satisfying looking at a gleaming car than a dirty one!
Hope this helps!
