At doses of 25mg and up one can notice results within the first week. This will be most likelly in the form of water wieght. So the first week the scale will be your best indacator. Then within the 2nd and 3rd weeks , size and strenghth gains should manifest. It happens at a fairly quik rate.
Yeah the process is exactly that and then reverse it for when you stop taking them
Your gains and strength will diminish at a quick rate too
Seriously though I don't see the harm in doing dbol for a 1st cycle. I don't agree with it but don't see the harm and it migth give you some gains. When your on cycle with dbol 20 pounds in a few weeks is not uncommon... even 30. Obviously most/all water weight. Dbol aids fat loss and will give you great gym sessions and well its my fav bulking agent by far (excluding test).
I won't go into detail about what exactly dbol does and why strong orals don't give you sustainable gains etc.
Just do 6 weeks. It is very liver toxic. Even if you are doing smaller doses. Go upto 30mg now and do that so the total duratiuon of your cycle is 6 weeks. Don't go above that time length. 30mg is more than enough for a first cycle. Most of dbols weight gains are in the first 3 weeks so your best getting on your high dose very soon. I done dbol at 25mg for 6 weeks and gained 20 pounds and kept a large amount due to effective diet, training and rest.
Let us know how you get on. And please tell us you have a pct regime set out ??