You can make a lot of your own cleaning supplies
www.recipegoldmine.com has tons of recipes for cleaning supplies. althought these sometime require a big out of pocket start.
as for food, double coupons and do freezer cooking. you can make spaghetti sauce with meatballs for fairlly cheap and being one person have enough to freeze for two more meals at least.
make a list of what you have to buy each week: milk and toilet paper are the only two real essentials i can think of. then look to see what meats they have on sale and buy in bulk. to get a variety of meals you may have to settle for pb&j for a few nights but after a few weeks you should be able to vary your dinners.
best of luck.