Most of us at work seem to be using Studio 3T to access our data in MongoDB. Here are a few things that I've learnt that help me use it better.
Shell shortcut
To open the shell to write Mongo queries, click on the collection that you want to search and use cmd+l.
Query history
If you want to see the previous queries that you ran in one of the input boxes in the normal view, press cmd + down-arrow. A revelation!! So handy.
Limit your query
If you want to see some example of data that is stored in certain keys or want to check certain records - make sure you limit the search query to 10 or so... otherwise it'll take forever when you have a big dataset.