If you know how to use a to-do list, you already know how to use Turtle.
The main difference is that each to-do list item has it's own chat room to discuss with your team (and track time, add files, etc).
The best way to learn is to start using the app.
Here are some tips:
Add tasks by typing and pressing enter.
Assign tasks to yourself or a teammate:
Place tasks under other tasks to signal priority or grouping.
Check out what else you can do by clicking the "more" button.
Any questions or suggestions? Let us know: firstname.lastname@example.org