Hi 
As far as deleting on click, you can connect the table & button to a dataset set to read & write. When they click on the row, it will ‘select’ that item from the dataset. If you set button settings to ‘delete’, it will perform the delete function you are looking for.
For the other … You cannot edit inside of a Table. Using the same method above, you can additionally have user input elements at the top of the table so that when a row is clicked on, the user can edit the information using the user input elements. Then you can have a button to ‘save’ changes.
Wix recently had a webinar showing how to create a client dashboard — but I think they have since removed it from YouTube because I cannot find it. (And I don’t have any tutorial videos showing exactly this.)