
What’s up, everybody?
This subject’s content will be a work in progress throughout 2024. What you’ll see inside has made it through some editing and checking, but will likely require further revisions and corrections. Enjoy the free access…. all I ask is that you hit that “Mistake on this page?” button at the top of each chapter, when you find something that needs fixing.
Regards,
Mr Patterson
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Unit 1
Unit 2