Anywhere from 20-40mgs / day. Split up into 4 doses a day. Everyone is different. 1st cycle he should start at around 25 for week one. If he starts to really feel it kick in hard, stay at 25. If not up the dose to 35. No need to go over 40mg ed for any reason. Is he stacking or just anavar only? He should find really good gains on from this. Good luck.
Mule