At some point in our lives we will all probably wallpaper a room at some point but few people actually know how to do it right, so for something so expensive and so essentially a skill I thought it right to give you a quick how to.
First, plan your attack. Centre it around a chimney or main wall and make sure any overlaps or mismatched parts of the paper are restricted to a corner. Use a plumb line to then mark a vertical line on the wall and hang your first piece up to it.
Make sure that you line your walls with lining paper. Do not wrap the paper around internal corners. Go round the corner by 1cm and then paper over the overlap, flush with the corner.
Repeat around the room!
Image: playle.com