Database Design for Mere Mortals: https://www.amazon.com/Database-Design-Mere-Mortals-Hands/dp...
This is the book I recommend to everyone who is shy about DB's - I have owned several copies and given every one away. It breaks down not only functionality but how to create a good design in a sensible and easy to understand way. Worth every penny (and now somewhat cheap)
Database Design for Mere Mortals - https://www.amazon.com/Database-Design-Mere-Mortals-Hands/dp... (not an affiliate link)
Legend of the Drunken Query Master -
There are millions of references on the subject, but perhaps you could start with a good intro, one of my favorites:
Hope that helps.
And keep on posting. Sooner or later the crowd oughta pick up on it a get your ball rolling.
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