I'd like to add that if anybody would like help in the next few days with a testing environment, whether it's a guided tour of the koha-sandboxes, or help setting up kohadevbox (see
https://github.com/digibib/kohadevbox ), feel free to ask me (barton) in IRC. Just mention my name in #koha, and I'll come-a-running.
Feeling comfortable in the testing environment, and with the testing process itself is the name of the game. That's why we do the GBSD -- so that testers know that there will be people around to answer questions. One of the ways go get comfortable is to take a nice easy walk through the process a couple of times before doing it in earnest... and I'll be happy to do that with you. :-)