How to master a programming language?

I read SICP
I like all the recent troll threads, but let's discuss something for the non-expert programmers.
How to master a programming language quickly and efficiently, /prog/?
I started learning Perl recently, read Learning Perl (The Llama or some other sandkip animal book), and skimming through a style guide (PBP), but what can I do in the meantime, except exercises of Project Euler or such?
My level of knowledge is too low for Sourceforge or some other GNU-spirited code factories, and enough for exercises given in books. Anything I can do at this current level?
tia

It's quite possibly one of the saddest forms of abuse. Not physical, not emotional, but chemical. Yes, I'm talking about people whose mothers abused them with drugs and alcohol when they were small or even unborn children.
 
Did your mother switch from cheap beer to hard liquor when she found out she was pregnant with you? When you were deeply disturbed by the ending of Return of the Jedi when you were 3 years old, did she let you hit her joint and think it was funny when you choked on the weed smoke? Did your mother, when you were 4 years old, let you snort some lines off her "magic mirror" after you caught her doing the same, and get mad when you became hyper for some reason shortly thereafter?
 
If so, you should visit http://dis.4chan.org/prog/ Here you can share your stories of your strung-out mother and her attempts to poison you with her narcotics. It's not funny, and it's not cute. It's abuse. And it hurts.