#99: Ask for vendor training while there's an incentive
Often, the first time anyone at a library tries to figure out how to change the color contrast on a third-party app, get a screenreader to work with a vendor’s database, etc. is after the service has been purchased and the first frustrated patron has gotten in touch with the library with a complaint. At this point, the vendor may be slow to respond to requests for help or never respond at all. If you are in the process of purchasing a new service, ask then for the vendor to provide training materials on how to use any accessibility features of their product and where to go for more help. At this point your money is on the line for the vendor, and getting these tools means you might be able to provide a frustrated patron with help immediately.