End User Licensing Agreements
Almost all legitimate software packages will include an end user licensing agreement (EULA) that includes a lot of information. Though they may seem long and tedious, you should make a habit of reading these EULAs as they inform you of your rights, responsibilities, and/or liabilities. Ideally, they should tell you exactly what they intend to install on your machine and the limitations to your use of the software. If the EULA is hard to find, or if the documentation is unreasonably difficult to read and understand, then you should think twice before agreeing to install the software.