Beginner question


I am trying to see if monday is useful for simple project tracking.
I have a bunch of tasks. Each task has duration (in days) and dependency (on 1 or more other tasks).
I would like to be able to list them in a board and see the critical path for project completion.

So far, I saw the timeline column but it requires to specify start/end date, while I want to specify only the duration only and let it figure out the timeline by itself.

Can someone guide on how to achieve the target above? relevant online tutorial ?

Thank you,