Could be a hillbillies way of getting a lift, if it sits higher than you remember. Otherwise I dont see how both sides ending up like that is an accident. Usually you increase camber to compensate for permenate higher than average loading conditions, such as a plow that will remain in place for the life of the vehicle, or some utility trucks.
In my opinion, its best to just take it to a shop and eat what they charge you, average around me for a 4-wheel is $80, drop $20 for just the front two.
You can do the job yourself pretty good by eye so long as your toe is correct. I've never adjusted toe without a machine, but I can come pretty close to perfect by eye on camber and caster.
If you want to do it yourself i'll include a picture, you will need jackstands as this is nearly impossible without. But largely its loosening two nuts and adjusting a pivot bar. Should you decide to do this yourself, make sure you make both start marks and end marks so you adjust both sides equally. You may want to adjust one side until it looks right then measure from a solid position that you can measure to on the otherside.
Here is the instructions.
CASTER: Move the rear position of the pivot bar in or out. This will change the caster angle significantly and camber angle only slightly. To retain camber move the forward pivot very slightly in the opposite direction.
CAMBER: Move the forward position of the pivot bar in or out. This will change the camber angle significantly and caster angle only slightly. The camber angle should be adjusted as close as possible to the preferred service specification. After adjustment is made tighten pivot bar nuts to specifications.
TOE POSITION: The wheel toe position adjustment should be the final adjustment. (1) Start the engine and turn wheels both ways before straightening the wheels. Center and secure the steering wheel and turn off engine. (2) Loosen the tie rod adjustment sleeve clamp bolts/nuts.
NOTE: Each front wheel should be adjusted for one-half of the total toe position specification. This will ensure the steering wheel will be centered when the wheels are positioned straight-ahead.
(3) Adjust the wheel toe position by turning the tie rod adjustment sleeves as necessary.