I'd recommend coming back and reading it when you've learned a bit more Ruby then. If you've "just started" then you probably don't yet have the experience in Ruby to understand what it means.
I understand that at a first glance this looks like basic stuff that doesn't explain anything useful, but with a bit more experience you'll see that it's fundamental to understanding how Ruby will react in certain situations.
I understand that at a first glance this looks like basic stuff that doesn't explain anything useful, but with a bit more experience you'll see that it's fundamental to understanding how Ruby will react in certain situations.