[rajeshmr]

Figure out a problem and try solving it in bash - bash for beginners guide on tldp site can get you started. You get better as you use it.

http://www.tldp.org/LDP/Bash-Beginners-Guide/html/

EDIT : Additional links -

Advanced - http://tldp.org/LDP/abs/html/

Bash programming - http://tldp.org/HOWTO/Bash-Prog-Intro-HOWTO.html

[mapcars]

ABSG is always my answer to how to learn shell

[rajeshmr]

Yes :) ABSG is good.. but do check out the other links too :)

[lukehaas]

Just googled ABSG and all I got was 'Adult Bible Study Guide'

[yellowapple]

To really understand Bash, one's soul must be in tune with God.

[AlexeyBrin]

http://tldp.org/LDP/abs/html/

Next time, try to google "absg shell".

[rajeshmr]

It's advanced bash scripting guide.