Toilet installation sounds like a difficult task to those of us who aren't experienced with plumbing or remodeling. However, according to the DIY Network, the toilet "is easy even for beginners to install".
In the how-to article about toilet installation, it is stated that the toilet should first be completely assembled before installation can begin. The article goes into detail describing each step necessary beginning with installing the knock-out flange which will be compressed under the toilet to create and airtight seal and keep sewer gases and debris away. Next the toilet will be attached, sealed, and bolted to a wax ring atop the flange. The process ends once water supply lines are connected and toilet seat is added.
Read step by step toilet installation instructions from the DIY network.