bear, o.k I have a good schedule in mind that you can start out with. First though, to tone up, you need to have a good combination of weight training, good nutrition, and cardio. How does your diet look? Try to eat 5-6 meals a day of nutritious foods, and like cut out the fast foods and junk foods. You will probably want to have your calorie level about at your maintenance level, which for you would be about between 2,200 - 2,600. As for weight training and cardio, a good schedule would look like this...
monday - chest, triceps, shoulders
tuesday - biceps, forearms, lats/back
wed - abs, legs
thurs - rest
fri - cardio
sat - rest
sun - cardio
You can always switch the days a little bit, depending on your timetable, which days you can workout or not due to being busy. As for types of lifting exercises, I will post two helpful sites with good exercises to do. For each muscle, do 2-3 exercises, with about 3 sets of 6-8 reps to failure. Make sure to stretch your muslces before, during, and after the exercises, make sure you feel the stretch, and focus on slow reps. Each week you workout, add a little variety, such as do different type of exercises for each muscle, and switch from slow reps to faster reps every now and then. Focus a lot on building muscle, cause the more muscle you got, the more it burns fat. Each day you lift, should be between 60 - 90 minutes, with about 2-3 minutes of rest in between sets. Remember, work your muscles hard, with heavier weight, make sure you can do 6-8 reps. As for what kind of cardio to do, since you are working out at home, you don't have access to gym machines, so maybe you can go for a 20 minute jog, or buy a step aerobics tape and do step aerobics for 20-30 minutes, or if you have a stationary bike, use that. As for supplements, buy some
whey protein powder, and take about half a scoop 20 minutes before you lift, and then take a whole scoop right away after you are done lifting. Along with taking whey protein after lifting, you should take some simple carbs like dextrose or fruit juice, and also drink about a liter of water. Try to cut out soda if you have that, and try to drink more water, about 80-100 oz a day. Oh yeah, try to do cardio in the morning on an empty stomach, which increases fat burning, and when you get the whey protein, take a scoop about 20-30 minutes before you do cardio, to prevent
muscle breakdown. If you have more questions, let me know. Good luck.

Here are the sites...
http://www.musculardevelopment.com/new/25bestlifts.html
http://www.betterbodz.com/exercise_main.html