Osho and his teachings have been brought up a number of times over the years. Some seem to think his philosophy is harmful or potentially harmful while others find him helpful.
If it helps you on your spiritual path and helps you be a better person, then I can't really find fault in it. However, I do think it wise to not confuse the kind of new-age spirituality that Osho promotes for authentic Buddhist teachings.
Personally, I think one would benefit a lot more by just following the Buddhist teachings and not muddying the waters with any new-age guru stuff. That's just my 2 cents.
"Of all tyrannies, a tyranny exercised for the good of its victims may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated; but those who torment us for our own good will torment us without end, for they do so with the approval of their own conscience." -- C. S. Lewis