Where is more Help with Customizations

Hey y’all. I’ve been working in Acumatica for 2 years now and have really gotten a handle on GIs, Import/Exports, Reports, Business Events, etc. 

Now I’m working through the T200 pdf training and my lack of web dev experience is making me have to dig far too deep into every code snippet to fully get it. My background is in Panorama Classic (a dead language) and Python, so I understand the basic structures of a language. However, I find myself constantly going, ‘but why?’ in the training in a way that I know means I’m NEARLY there. 

Do you know any videos or other tutorials that might help me get up to speed on doing my first solo customizations? 

Do you have advice for getting through these trainings from nearly zero? 

-- Lunar