During the first 4 weeks in basic, you are confined to cell block 80 and cranditz. Then after basic, unless you get a restriction you are free for the weekend.
If your course goees through the end of july or the xmas period, you get 2 weeks off. IOT basically closes for those 2 periods of 2 weeks. As you get further into the course, you get more privaledges and less restrictions and therefore more free weekends.