There is a page - https://confluence.atlassian.com/jira/jira-user-s-guide-100303115.html - with a full table of contents that looks like it's complete documentation on Jira. Unfortunately, it's JIRA 6.4 . There's a pointer there to documentation for the current JIRA products, but the documentation pages don't seem very helpful if one can't answer any of the "questions" - that is, looking for an overview of functionality, some organization around how the product is structured (clearly, I'm a new user), assuming I "know" already what I am trying to "do". Seemingly clicking on link after link and drilling down into a multilayered set of documents without knowing the extent or depth feels frustrating and risks a lot of time wasted.
Is there a page for JIRA Core, Software, and Service Desk structured the way the "JIRA Users's Guide" linked above is?
