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The classic cycling engineering science texts are Archibald Sharp's Bicycles and Tricycles, and Whitt and Wilson's Bicycling Science (both published by MIT press, though as a century-old text the Sharp may have other reprint editions). Both interesting in their own right, will give you pointers for further areas of study, and more likely to sustain interest than a standard engineering statics/mechanics textbook.
Yes, I need some of the general principles of engineering and don't think I need to go far beyond first year undergraduate or into any niche bike stuff. Just want to learn how to calculate the strength of tubes and having an understanding of the load on it and things like that. But I don't even know what I don't know, so I prefer to start from the basics with a well rounded course or textbook. Think those MIT lectures are my best bet