I'm afraid Nick14 is right, the FO pay at Ryanair is pretty poor by industry standards. Probably 48,000e gross before deductions and tax. And you don't get any benefits whatsoever.
Say you fly a good summer month of 90 hours and earn 7000e. After Ryanair, the Accountants and the Irish Taxman take their slices for doing next to nothing, the money transferred to your bank account will be well under 4000e. That's equivalent to paying over 40% tax.
And it goes without saying that you don't do 90 hours every month, winter hours are half that.