Step #1: Make sure you have a csv file saved using the proper format. Row 1 should have the column titles (first name, last name, email, phone, etc) and you should only have 1 piece of information in each row. (See image below for example)
Step #2: Go to your contacts screen and click on the import contacts button (it has an up arrow on it)
Step #3: Map your fields with the correct fields in Agent CRM
Step #4: Choose a tag if necessary
Step #5: Click done and your import will take place