Need help from the Mustang Crowd

[b757jetdr]

OK I am looking for some help from everyone. I know hardly anything about mustangs. I just had my daughter and her boyfriend move down with us to start college and work at Amazon. Tyler my daughters boyfriend ask me if I might be able to help him look into this old mustang his mom has, he is not into cars at all. I have not been able to see the car in person, but here are 2 pics he got me.
Sorry for the cell phone pics, now questions I need help with.

1) What year is this car?
2) Once I get to see the car where should I look for the vin# and where/what other info/things should I look for??
3) What are the best websites to research mustangs??
4) I have no real idea the condition of the car, but hope to in the next few weeks, I may have the opportunity to buy the car for a friends & family discount so trying to get quickly educated.
5) And lastly might be stupid question but by the pics rough guess on how much to pay?

Now I know there is a ton of unknowns here till I can get way more info and see the car in person, but give me what you can. I know the car has been sitting for years.

Thanks