CUCC uses the platform-portable Survex package - this has its own website and can be downloaded free. It also has a mailing list to keep you up to date with new releases and the like.
For more discussion on Cave Surveying, there is a specialist cave-surveying mailing list. Most of the discussion here is not at the beginning-surveyor level, however.
You might also like to join the Cave Surveying special interest group of the British Cave Research Association. This publishes the quarterly Compass Points, which is also available on the web, some time after the printed edition (the delay depends somewhat on how much work the webmaster has to do on this site before finding time for Compass Points :-)