wisdom class

Wisdom teachings are like raw, i mean, living food for the mind.
It lightens the mind of unwanted pollution, cleanses it, wich is the way to enlightement.

Osho teachings are wisdom teachings.

here are two good handbooks, ideal to make an opinion:

Freedom, the courage to be yourself - osho, 'insights for a new way of living' sery
Osho - body mind balancing

...Many others:
Lunchtime enlightenment -Pragito Dove