No problem. first determine the distance between each stud. Measure from the center to the next studs center. They should be either 16 on center or 24 on centers. This way a 4foot by 8 foot sheet of drywall will fit on the walls.
Get the following items: drywall nails, enough sheets to do both sides, joint compound, paper or fiberglass tape, a trowel, sand paper, and a sharp box knife.
If you walls measure from floor to ceiling are 8 foot, then you stand the sheets up right and nail them on. Dimple each nail so that you can compound over the nail to cover it up. Make sure that on the side your working to, that each sheet only takes 1/2 of that stud so that the next sheet can tack on to it also. This is why 16 OC or 24 OC is so important. Keep hanging rock until you go to the corner. Here you will have to cut a sheet to make the finish run. Measure the distance in three spots and then mark the next sheet and score it with your knife, then stand it on the side and flex it and it will break on that line, when it does score the back side at the break and there is your next sheet. No sawing, or any messy job in cutting.
Next you have your tape and bedding, this you need to just do a search on the SE's and it will show you better than I can describe. Its easy but its a three phrase process that needs complete drying time between phases. I recommend using 20 minute mud, it dries so much faster than the over night stuff.
After this, hang your moldings and do your trim and then even do any texturing if needed then prime and paint.