Do nothing about river initially (5)

I believe the answer is:
seeto
'do' is the definition.
I know nothing about this answer so I can't tell whether this works.
'nothing about river initially' is the wordplay.
'nothing' becomes 'O' (looks like zero - 0).
'about' is a reversal indicator.
'river' becomes 'tees' (River Tees ).
'initially' is a charade indicator (letters next to each other) (some letters go before others).
'tees' written backwards gives 'seet'.
'o' put after 'seet' is 'SEETO'.
Can you help me to learn more?
(Another definition for seeto that I've seen is " Sort out".)
