One thing I’d add is: save your kits regularly. Save each one as you finish working on it and begin another. Although patterns are saved automatically when you select a new one, kits are not and only the edits made to the currently active kit will survive a power cycle.
This may be obvious but it has caught me out sometimes during long sessions where I tweak lots of kits only to be puzzled when loads of patterns sound different/wrong the following day.