I watched the demo on line.
I've been using QV at work and need to bring in some Excel sheets to link with the existing data.I'm also currently looking for info on Collaboration and designer methods.
Check out the free training in Services->Training in qlik.com. Developer-I and Designer-I free courses are very useful and easy to understand. The working material provided in the courses will have some documentation you are looking for.
Retrieving data ...