Go up the stairs and left click then middle click the cash into your inventory. From there open your extremely noisy pc and advance the quest by reading all the emails or at least the first one. Hop in your oil guzzling beast and head into town. You'll need to stop at the auto store. Pick up 3 things which will cost 100$

$20 - Plug Wires
$25 - Fan Belt
$55 - Cam Gear

Note you still need a fan but this gets you started! Pick up your truck from the junkyard with the remaining 400 head back home and sleep. In the morning your truck is waiting. Slap the parts in and make sure it's all bolted down. Grab your chainsaw and cut down the tree with a red ribbon around it, gather it all up into the truck bed and head Into town. Don't take too long or leave it running, it'll overheat.

When in town head to the stall and turn right up the path to the forge and sell the logs you gathered, head back into the auto parts store and get the fan. Finally head into the gas station and stock up on coolant, drinks, food, and oil In that order. If you need more money there is 2 trees nearby you can chop down and sell.