BBers tend to use this stuff differently than fat people or people with diabetes.
For fatties and diabetics, starting dose is 2.5 mg/week for 4 weeks, then jump to 5 mg/week and see how you do after 4 weeks. Maintenance dose is 5 mg, 10 mg or 15 mg depending on the individual.
If you are not a fatty or diabetic, I still suggest you start with 2.5 mg/week. You may find this is all you need to reach your desired goals. My guess is you wouldn't need to go above 5 mg/week if you are not a fatty or a diabetic.
I'm actually kind of a fatty and 5mg/week was plenty for me. I know others on it but only one that takes as much as 15 mg/week but they were almost 400 pounds starting out. Right now they are about to be under 200 pounds.