Linux Bandwidth monitoring tools and this (better explanations) - Instead of apt-get use yum install for RedHat based systems like Fedora, CentOS and obviously RedHat.

Common Linux commands - The description is terse. Use man or info for details.

Homebank is a popular accounting software to manage your personal accounts. HomeBank benefits from more than 12 years of user experience and feedback. Its development started in 1995 on Amiga computers. It is available for 45 languages on GNU/Linux, FreeBSD, Microsoft Windows, MacOSX and Amiga.