Translation of propitious in Spanish

I usually charge 15 dollars per hour, but I don't care very much for the hourly system. I can also help with corrections and suggestions, but only if the original text is a serious translation and not an automatic one.
It is called Facebook viral marketing. I'm 62 and it's somewhat mystifying, but my two boys are using it continuously. What I'm a bit afraid of is the personal information they send to everybody. It has no privacy.
I'm helping you with Spanish and you can help me with English. How did you teach yourself the grammar? Here in Zurich it has being raining for 5 days and we have spent most of the time in front of the TV.