Hello Mark, this is really seconding what Rambabu and Daryl have provided, but check out Atlassian's documentation to get familiar with concepts, terms and available actions.
Atlassian also has lots of videos covering topics and use cases on YouTube.
*As its been a year since your initial post, I am sure you've covered a lot of ground since then. All the best.
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG