On YouTube check out
Junkman2000 for his 2 bucket wash
Ammo nyc
Autogeek also had a bunch of good how to videos
With new paint let it air out for a couple months. Just maintain the the paint with proper washing techniques and you will be fine.
Pick up 2 home depot 5 gallon buckets
A nice quality wash mitt preferably one dedicated for your car
Quality soap- over the counter griots isn't bad but duragloss is nice
Quality MF towels
Grit guards
This would be the bare minimum for a 2 bucket wash.
It usually takes me roughly 2 hours to wash my car from pulling everything out to just about putting everything away. I pressure wash the car, use a foam cannon, 2 bucket wash, blow dry, dry, QD and dress all the trim/tires.