PR in Saskatchewan

Hello everyone,
im planning to go to Saskatchewan for my masters. i intend to get the PR. i've heard if i work in Saskatchewan for 6 months after completing my masters, then i can get my PR. one of my friend said that, people who completed their undergrad from canada are the only eligible ones. people who completed masters from canada has to show more work experience. is this true?? i've also heard that i'll get work permit for only one year as i will do my masters. what if i get my job just when my work permit is about to expire? in this case, i'll have a job but as my work permit is expiring, i cannot work for 6 months to apply for the PR. what happens then??can i extend my work permit so that i can work for 6 or more months to apply for the PR?? what kind of job it should be?? full time or part time? after getting the PR, can i move to other provinces?? a detailed reply would really be helpful...Thanks.