Hi vegasmike00, Welcome New Guy! :-)
"Whats going on here?"
Looks like you may be suffering from a case of Downy Mildew. Do your own first hand investigation to confirm. If it is Downy Mildew, you may find this helpful:
Natural Remedy for Downy Mildew on Plants
"I want an education, please help the new guy!!"
OK, start with this:
I would recommend you stick with leafy greens and herbs on an indoor TG. You may find the following helpful:
How to Ensure Your Indoor Tower Garden Is a Success
Everything You Need to Know About Indoor Gardening
When “Something’s Growing in the Kitchen” Isn’t a Bad Thing
Growing [Flowering / Fruiting Plants] Indoors - Is It Worth It? <== Important Read
...and of course always abide by these (indoors or outdoors):
How to Mix TG Nutrients
FYI - Tons of additional information available here: