Ive recently started on a health phase. Basically im fairly scrawny with a beer belly due to years of alcohol abuse while i was a student. I want to lose the gut and build up some muscle, especially on my arms and chest. So far all ive done is started riding my bike for 5-8 miles per evening and cut the crap out of my diet a bit, over a month ive lost a stone and im now just under 11 stone. Ive bought a basic bench with 75kg of assorted weights with it. Im also trying to eat tuna or chicken after ive been for bike ride.

Where do i go from here, i dont know what exersizes to do or how to do them really, ive been doing situps but its just making my stomach harder but still round. Any advice appreciated.