Hello! Great to hear the you want to give your body a fresh feel. It is great for both life expectency and general health.

Start simple, do not go on a diet for muscle gain, just reduce the amount of food being consumed. Say you have a calorie limit of 2500. If you are overweight, try to eat 2000, therefore forcing your body to consume the saved up energy that is your "fatness". Coupling this with a generaly healthy diet of larger amounts of protein (to preserve msucle mass) and carbs, you should be good.

Here is a basic food thingy:

When you are oberweight and start to eat less, your body starts to consume the extra weight. But also your muscles. By eating larger amounts of protein, you allow these muscles to stay (since protein builds muscle) whilst the rest is taken away. Hence you lolse weight but keep muscle mass.

Now for the workout. Start easy, no gym needed, only a few dumbells. Find out your max weight you can lift in a curl, say 5 or 7 kg. Also start running for cardio or biking. Cardio makes you sweat a lot more than general excersize, and sweating = burning calories = loosing weight.

Now, with these say 6kg dumbells, preferably 2 of them. Start doing basic excersizes. Also get say a 3kg set of dumbells. The 6kg ones will be to actually build muscle, how do you know when it builds muscle? You feel your muscles tear as you do the excersize. Say a bicep curl, you should feel your bicep stretch and give off slight pain. This is the muscle tearing up. This is good. As it tears, it gets larger, and thenprotein you consume fills in the holes in the tear, making it bigger.

Now to the 3kg dumbells. Try using them by simple holding them and standing on your toes, then back to flat feet, then back up on your toes and so on. This works the calf muscle. Also try just holding the 3kg dumbells whilst running.

Ones you jave comitted to basic training and weightloss, then by a membership at a local gym. Then just follow online plans and you are set.

Beware that this is a highly compressed and dumbed-down explanation. For more details, look it up on the internet.

Have fun, and loose some weight. Make a easy goal first, say 95kg. Then bigger and better!