a) None most of the time, at times something like Asana for keeping track of todo's. b) I keep track of sent invoices and paid invoices in a Google Docs Excel.

a) None most of the time, at times something like Asana for keeping track of todo's. b) I keep track of sent invoices and paid invoices in a Google Docs Excel. c) Aha, this is the big one :) First, as few meetings as possible. Second, manage by objectives & context, not tasks. Third, OKRs. d) Not sure.