American Truck Simulator Beginners Guide

After a break of around a year I recently returned to my favourite truck sim because of the new Oregon DLC, and thought I'd make a basic guide for anyone new to the game or looking at dipping into it.
Songs in order of play:
1. Not sure of the artist, it's a short piece designed for background music on videos
2. Loving Caliber - She Will Never Know
3. Mikael Rosman feat. Viktor Nilsson - Tennessee Skyline
4. Kevin Andersson - Good Things Will Come
5. Loving Caliber feat. Emmi - We're A Little Messed Up - bsocially