I have a Savior Equipment Urban Warfare double rifle case that I use. Has room for mags as well as ear and eye pro and other stuff. They have other cases as well for single rifles. Good quality.
https://www.saviorequipment.com/collections/rifle-bags/products/urban-warfare-double-rifle-case
Tactical Shepherd has an Intro to AR class that goes through taking apart, cleaning, putting together and then sighting in. Looks like the next offering is June 15th. https://tacticalshepherd.com/pages/training
I already had by MD permit before I heard about Tactical Shepherd, but I did take my Utah class with Mel and Kenny. Very knowledgeable and have real world experience. I highly recommend. They have other classes that look awesome as well.
PSA had the VP9 over the holiday for $529 so picked that up. Only issue with PSA is they are hit or miss on if they will send mags over 10rds to the great state of MD. This time they did not, so good that H&K was offering their promo.