Study Bachelor and Master in Norway (in English)

I am in Abu Dhabi , UAE
This Visa procedure is not that difficult , first I should be well aware of all the possible expenses that will matter with greater magnitude.

I am comparing all these with Australia’s expenses.

in Australia students have work permission for 20 hours a week , what about Norwary/European Countries?
and How much return should expect an Engineer with 4 years of Gulf Experience in Norway from 20Hours work in a week?

Thanks