If it's just weight loss you're after rather than fitness simply cut 3 things from your diet
Sugar, your body doesn't actually need sugar.
Wheat
Dairy (milk)
Remember Sugar in foods is sometimes called something else to try to fool you
Dextrose, Fructose, sucrose etc etc
Simply cut those 3 things out and you'll literally see the pounds drop off you.
Oh i say simply, it's very very hard.
Cut out fruit except avocados and on the veg side no Tomatoes or Carrots too.
It also means alcohol is out of the question (wheat) and no white rice (sugar).
I went from 16st to 12st 8lb in 6 months without a shred of exercise and felt good after the initial sugar shakes (sugar is apparently more addictive than heroin)