Here is a quickie but a goodie. If you post a transaction in FE and then delete it, the record will remain in the database. This allows you to have a paper trail in subledgers for transactions posted to General Ledger. You can create a transaction query...
Have you ever found yourself in a situation where you're looking for a transaction but it's missing from the Activity tab of the record? You know the charge exists because you're the one that added it or you've seen it before, but where...