do ands donts with rocket stoves

is there any do and donts with rocket burners as im asking this one myself

when loading up the rocket burner with wood i try not to block the entrance to the burn tube as im sometimes worried if i do block it it will back flush and put itself out

theres the dont touch the system when its being fired as hotter than loads may think

there the loading problems that some have come across where a back lash of flame comes at them due to door being opened too quickly