Player with a few questions

[Saviour 1]

Hello, I've been playing this game for about 2 weeks and have a few questions on some items

1. Tents, Where is a safe location to put some? and is there a way to relocate one you put down without remember cords if you dont have a GPS? and is there any glitches i should be aware of? me and a few friends are trying to find a few to stock some supplies on

2. Vehicle, where are good locations to find decent cars or trucks that arent super dangerous to get too? and how do you repair a car? do you need to find an engine? and can ALL vehicles be repaired? also, can you store items inside vehicles? i think i've heard people saying they have but not one hundred percent sure

3. High end gear, Where are best locations to find a few GPS, Rangefinders, NVGs, Ghilles, etc.

4. Also, would are a few gun combinations for a squad of about 5-7 people to carry that would make us pretty decent at looting a town or city with little trouble? we always play on 30+ player servers and have run into a few gun fights that have no ended well and want to know a few good guns that could give us an advantage

If you could answer this that would be a great help, we are decently experienced, but having a hard time getting high end geared.