You should already be training hard and be looking for something extra to boost your workout and physique. You should already have your diet sorted out. Also a good idea to have looked after your liver as oral steroids do put pressure on your liver. This can be as simple as taking milk thistle as the package recommends for a few months prior and after your cycle. There are also liver cleansing foods that would be smart to add to your diet.
Start off at 10mg a day 1in the morning and 1 at dinner, for 1 week to check that you do not react badly to the steroid. If your source is dubious this could be wise. Then increase to 30-40mg a day I like to do 2x 10mg tabs after breakfast with 25mg of provironum and a multi vitamin then 1x10mg at lunch with fish oil and glucosamine and another 1x10mg tab at dinner with calcium and vitamin D, multivitamin (bodybuilder and weight lifter's should double dose on vitamins)and another 25mg of provironum it's a lot of pills but the effects are great.
I like to taper off the dose from 40mg each day to 20mg a day for a week to 10mg a day for the following week and then start you PCT. For PCT week 1 of PCT I do 50mg provironum and 40mg Nolvadex each day fir a week then drop the provironum to 25mg and the nolvadex to 20mg for week 2. Then 20mg a day nolvadex week 3 and 4. At the same time I will start to take zinc, magnesium and vitamin B6 as directed on the bottle. This will help you to boost your own natural testosterone I run the vitamins with a liver support for 3 months. Then take 1 month of all pills except fish oil and I do a bowel cleanse.
The second stage to the PCT is to TRAIN well and with intensity...............this can be quite hard as your Dbol pumps and strength have gone, you will need to train a shorter time and will take longer to recover but you must keep up the intensity. Also very important to keep a high clean calorie intake during this period..........If you do not train with intensity and diet well you may loose some of your gains. Pills alone is not PCT.