Finally, after you set all the configuration settings and options, turn off the services you don't want or need, and install security utilities, it's time to install the programs that you plan to use to perform real work or play with your computer.
Most programs that are on CDs have an automatic installation routine that either run automatically or when you open the CD. Programs that come to you through Internet downloads usually have a setup program. It's always a good idea to read the Getting Started or Quick Setup section of the manual (or any other installation instructions) supplied with any program before you begin to install it.
Be sure to scan every program you download or obtain from any other source you don't trust for viruses and spyware before you install them.