I want to know more about Jira usage.
First of all, welcome!
Second of all...wow, that question is pretty open-ended--you never know what kind of answers you'll get with a question like that =) Actually, it technically wasn't a question =) Is there something specific you want to start with?
If you give us something a bit more focused, we can try to help. I don't think anybody would be interested in a total brain dump of everything they know =)
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