Instructions

A little more complicated: http://lynx.isc.org/lynx2.8.5/index.html. See the Installation instructions.

Much simpler: http://darwinports.opendarwin.org/ (Site was down as of 6/4/07. Try http://darwinports.com/ instead)

Download and install, and make sure that you have the Developer Tools installed. Then, type this in Terminal:

sudo port install lynx

Accessing it is as simple as /opt/local/bin/lynx, or maybe as simple as typing lynx if the PATH variable is set correctly (I believe that ports does this on install).

Tutorial

I used this tutorial to help me install Lynx: macosxhints.com - Lynx browser on OS X?