Por vs. para?
Is there a hard and fast rule when using "por" vs. "para"?
2 Answers
Here's a link to a video by Paralee that makes it very clear to me. Hope it helps:
por and para video prototype explanation link
There is also a lesson on one of the videos in this site on por and para, a grammar lesson on this under Learn -> Spanish grammar -> por & para, and then you can also type in "por and para" into the little search box under "ask a question" and there are multiple threads of other learners that have asked the same question. You can get some great answers there.
Por vs. Para can be confusing. Personally I think it just takes practice. There are some fixed expressions with the two, but besides that I kind of just had to memorize the different uses and practice them to make it more concrete in my head.