S2B2R

Ok so i have been goin out with my gf for 2 months now and all we've done is make out and touch each other a little bit. I think we both want to go a bit further (maybe oral) but i have no idea where to start (ie. how to drop hints, go down on her and actually finish the job) could you all give some tips on what to do (step - by - step) for me? Thanks a lot. Also, for when the time comes, what do u guys think is an acceptable time go for before blowing your load when ur losing ur virginity?