How do I solve 4 down in Daily Telegraph Cryptic 31240?

Question

Accepted Answer

4 down reads "Turn away from state benefit finally" (5 letters); the answer is AVERT. It's a letter-selection clue: take specific letters from a longer source. 'First of' means the opening letter, 'extremely' means first + last, 'regularly' means every other letter, 'oddly' / 'evenly' means odd or even positions. The full step-by-step breakdown is on this page.

Turn away from state benefit finally (5)

4D — Turn away from state benefit finally (5) — AVERT