Very sorry for your loss.Welcome to the best site out there. You came to the right place to get to know the car better. There is a lot of great guys on here willing to help. Where do you live? There is different forums for Midwest ,southwest etc. Post an introduction in your area as well. Again Welcome to the site
My condolence to you and your family; continue your brother's love for his ride, and there is some great mentors on this site that can help you with your needs.
First step: Start her up and make sure the oil light goes out on the dash either immediately or very soon after starting it...or verify oil pressure if it has an aftermarket gauge.