Family History Library in Salt Lake City
You are encouraged to go to the Family History Library which is located just west of the tabernacle on Temple Square. You are welcome to use their facilities and do your family history research there. They have numerous FH Missionaries assigned to assist you. You may take your documents like Birth and death certificates and obituaries etc and they will assist you in scanning what you have. If you are taking photographs to scan, I recommend that you organize them by size before you go. It is much easier and faster to do all the same size at one time. If you have the long Book of Remembrance sheets they can help you scan them as well. Their scanners can scan both front and back at the same time at about 600 dpi all in jpg format. Remember to take a good thumb drive with you so you can scan your things onto you thumb drive and bring it home when you leave. I recommend about a 16 GB thumb drive if you have a lot of scanning to do.
If you are going with just 2 or 3 people you rarely need to call for an appointment. If you are going with a larger group of say 5 to 10 people or more I would call ahead and give them a week or two notice so they will be expecting your group. The number to call is 801-240-6815.