If you need to dismantle your Powerbook, as I have recently for a hard disk replacement, you need the excellent PB FixIt Guide Series.
Ruby is a language that’s getting a lot of attention as a slightly cleaner and nicer alternative to Python and Perl. If you have some basic programming experience and want to learn Ruby, there’s a very good tutorial here.
It’s mostly used, it seems, in the Ruby on Rails framework for writing web apps.
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