Be sure to choose the file type
that matches your system. If a file says "Windows," you
probably won't be able to use it on a Mac - and vice versa.
Just click on the file and it should extract itself onto
your machine in the location you choose. If you have an
older machine, you may need to right+click (Windows) or
Control+click (Mac) on the link and show the computer where
on your machine you want it to
go.