Hi @MarthaY4! I'm happy to hear that you were able to find out how to sort contacts in your account! I did want to include the solution here just in case another customer had a similar question.
You can sort your contacts by First Name, Last Name, Email Address, and Company/City/State or Date Added/Source (depending on your Contacts view). In order to sort alphabetically, you will click on the Name column, choose either First Name or Last Name and then the order that you wish to have the contacts display.