I played 15 hours in the first two days after I got it
gaem good
I was thinking about treating myself and buying no mans sky since its $60 but apparently it was randomly on sale so I got it for $24, fuck yeah
To buy one, you dock with it by approaching the glowing blue tractor beams, enter the bridge and speak to the captain. The easiest way to get a freighter is to save it from a pirate attack, as doing so will lower the price of the freighter. Some sources that I vaguely remember say that your first freighter is completely free, though I doubt that claim and can't confirm it.
Can confirm (though this info may be outdated)