Have emails in junk that want in my inbox but even after creating a contact they are still going into my junk, help?

When I was transfered over into outlook, some of  the things that used to be in my inbox got transferred into my junk.  I have tried several different ways to get them into my inbox but none have worked.  I have created contacts with email, I have created a new group called Important and put them into that group instead of newsletters but nothing has worked. Any suggestions?