How to regex match beginning and end of a file?

Question

Using /, I want to be able to search for (and jump to) the beginning and end of the file I am in.

Answer 1

:h start-of-file and :h end-of-file

Patterns are, respectively, \%^ and \%$.

Example:

/\%^I am on first line

Answer 2

In very magic mode (\v), the patterns are respectively %^ and %$ (see :help /\v and :help start-of-file, scroll down for :help end-of-file).