Studied again about Shakespearean king and bushranger (9)

I believe the answer is:

relearned

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'studied again' is the definition.
('learned' can be a synonym for 'studied' so perhaps 'relearned' is OK for 'studied again')

'about shakespearean king and bushranger' is the wordplay.
'about' becomes 're' ('re' means regarding or about).
'shakespearean king' becomes 'Lear' (King Lear).
'and' is a charade indicator (letters next to each other).
'bushranger' becomes 'ned' (I can't explain this - if you can you should give a lot more credence to this answer).
're'+'lear'+'ned'='RELEARNED'

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I've seen this clue in the Sydney Morning Herald.

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