Would it be deemed acceptable to look back at the basic chords and techniques, to remind myself of them?
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You shouldn't even have to ask the question, you should ALWAYS be working on the basics,
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Diffecult to answer that without knowing what level you are at and as your profile is set to private there's no clue there either.
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Well, yes! I mean, you'll use the basics in more advanced songs. Try practising ALL the major and minor chords you know, aswell as just the chromatic scale.
Basic? Yes.
Useful? In most cases yes.
You can't practise the basics too much. Even IF you only play the majors and minors and basic scales for 10 minutes, you'll train your fingers and, ofcourse, it is a great warming up!
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