Scanning old family pictures is really inexpensive and easy is you follow a few simple steps. You'll only need a computer and a scanner. If you have many images, you should consider an external hard drive or storing them online. Prepare the process properly by cleaning your hands, your scanner and the photos. Check the essential settings of your scanner software such as resolution, file format and color. Take your time to scan the photos and don't forget to scan the back too if it contains any notes. Then you can use photo management software to tag and improve them.
http://www.familytreemagazine.com/article/scanning-family-photos
http://www.familytreemagazine.com/article/scanning-family-photos