There are a lot of excellent, step-by-step installation howtos. With all of the excellent Linux distributions to choose from I am going to focus on Ubuntu Linux. It is a very good Linux, it has vendor support available, and it is showing up on a lot of OEM computers. What you learn on Ubuntu applies to many other Linux distributions as well. Here are a few Ubuntu installation howtos for your perusal:
So what if you just want to get your hands on it right now and start exploring it, and set aside learning how to install operating systems for later? There are options for that too. In part 1 we learned about running Linux from a live bootable CD. While that is a great way to test-drive Linux it has its limitations. It's slow because CD drives are slow, and if you want to save settings or data files you have to jump through some extra hoops. Again, all solved problems, but let's go ahead and look at how to get Linux pre-installed so you can dive right in and start playing with it.
Maybe you're looking at netbooks and thinking, yeah baby! Cute and cheap! Get a Linux netbook! Despite all the buzz about Linux netbooks it's not that easy to find one that's worth the bother. Or to find one at all. But there are some good choices when you know where to look. Dell currently offers its excellent Mini 9n with Ubuntu, and Hewlett-Packard's Mini series comes with HP's own customized MIE Linux. I'm not a fan of these vendor-customized Linuxes because nearly all of them are poorly-done, crippled in various ways, and larded with proprietary crud that gets in the way. My vote goes to Dell for making its Linux computers easy to find, and for using real Ubuntu instead of some strange customized thing. HP's homegrown MIE Linux has been getting favorable reviews, so if you can get your hands on it before purchase give it a try.