I HIGHLY recommend you take your print to a framer for professional framing. Your print is a piece of art and should be handled with the utmost care.
Have your frame ready and open. Use two people to unroll the print being very careful not to touch the printed side, and as you unroll it, place it directly into your desired frame.
Please be careful unrolling your print. When you take your print out of its tube, it will stay rolled up fairly tightly.