Video tutorials on OS installation and use of VirtualBox / VMWare Player

Installing Windows XP     (Size=83.4 MB, Duration=27:25)
Installing Cent-OS in VM using VirtualBox (Part 1)     (Size=76.8 MB, Duration=22:32)
Installing Cent-OS in VM using VirtualBox (Part 2)     (Size=137.9 MB, Duration=41:23)
Installing Ubuntu in VM using VMWare (Part 1)     (Size=61.6 MB, Duration=18:35)
Installing Ubuntu in VM using VMWare (Part 2)     (Size=97.8 MB, Duration=22:06)

Video tutorials on basic Linux shell commands can be downloaded from here.

ls     (Size=31.4 MB, Duration=11:30)
Working remotely     (Size=42.2 MB, Duration=24:52)
Shell Redirection     (Size=65.7 MB, Duration=34:35)
Handling processes     (Size=87.7 MB, Duration=35:45)
Handling white spaces     (Size=8.6 MB, Duration=4:57)

Video tutorials on advanced topics

Regular expressions (using grep)     (Size=60.8 MB, Duration=33:27)
SQLite 3     (Size=48.1 MB, Duration=20:52)

Video tutorials on very basic server configuration

MySQL database     (Size=27.1 MB, Duration=13:10)
PostgreSQL database     (Size=21.9 MB, Duration=12:15)