POTSDAM -- The Potsdam Public Library's computer center is offering classes dealing with selling on eBay, using Microsoft Excel and computer and internet safety.

Selling on eBay is Oct. 13 from 2 to 4 p.m. Participants will learn to set up a listing so items sell, register on eBay and set up a PayPal account. Participants will need basic computer skills and email account. Bring a credit card or bank routing number and account number to set up PayPal account at 1:30 p.m. Pre-registration required: 265-7230

Microsoft Excel is Oct. 20 from 2 to p.m. The class is an introduction to Microsoft Excel 2010. Participants will learn the various formatting tools necessary to create a basic spreadsheet document. Topics include setting up a basic spreadsheet, using basic formulas, and printing in Excel. The class is for a beginner or those in need of a refresher.

Computer and internet safety is Oct. 27 from 2 to 4 p.m. Class covers the hazards of the internet, malware and preventative measures. Attendees can bring a laptop or smart device. Those taking the class should have competence on their device and be familiar with internet navigation, downloading and installing programs. Pre-registration: 265-7230