[m0dc]

Memorizing documentation and obscure bash tricks is the last thing a developer should be expected to do.

Even reading the documentation (in its 'raw' form) can sometimes be harmful, because you miss out on the contextual information that a search engine provides. Especially if you're new to a language or domain, it's easy to fall victim to the XY problem [0] - you comb the docs trying to implement your perceived solution, when a simple Google search or Stack Overflow answer would give you the solution you're really looking for in seconds.

If something is important to you, you'll absorb it over time anyways.

[0] http://www.perlmonks.org/?node=XY+Problem