Holy cow, I am using orgmode since 2012ish, and just started learning about all the goodies recently. For instance how to quickly filter org-agenda items, for example (in org-agenda view)
* hit the key **\^** (caret). This'll filter all tasks that belong to the same outline parent item.
* or hit the key **\\** (backslash) to filter by tag
* and hit **|** (pipe) to clear the filter
There's lots more, see: **Filtering/limiting agenda items** in [https://orgmode.org/manual/Filtering\_002flimiting-agenda-items.html](https://orgmode.org/manual/Filtering_002flimiting-agenda-items.html)
I f\*ing love this tool! Literally makes me enjoy working on my projects!