I am 52 and about 30 pound overweight, mostly because ofmy depression meds, i do not eat alot of junk?

food, some here and there, i want to lose weight, i will be riding my bike (xmas gift) and using my gazelle and stability ball, what are the best foods for me to eat,a bodybuilder on tv said he eat lots of protein, fresh veggies and baby food sweet potatoes, is that good? any help would be appreciative. i might eat 800 to 1,000 calories a day now