to put up drywall is like putting together a kids puzzel, very simple, and yes drywall instead of plastering. taping is not bad at all, all you need is the right tools. Get yourself a 6 inch, 8-10 inch and 12 inch compound tools, a chaulk line, and utility knife.
measure the length of the wall and cut the drywall to fit it. always try to make less seams because of the taping. once you start taping, use the 6inch tape knife first, put the spackle on, then use the paper tape, and the knife, let dry and then use the 8-10 inch over the area of the first making it wider and let dry, and then use the 12 inch putting it over the last, making it even wider, and let dry. after all this, sand it down and then prime using drywall primer. then paint.
If you hire some one, they will do exactly what I said to do, and there fee's are usually $22.00 to $25.00 per sheet to put up and tape, so it is better to try and fail then to not try at all.