Lifehacker asked what a first-time credit card owner needs to know. As someone who first got a credit card at the age of 20 and is still reaping the benefits of using one correctly from the start, I have some advice to give on that.

David Farquhar is a computer security professional, entrepreneur, and author. He has written professionally about computers since 1991, so he was writing about retro computers when they were still new. He has been working in IT professionally since 1994 and has specialized in vulnerability management since 2013. He holds Security+ and CISSP certifications. Today he blogs five times a week, mostly about retro computers and retro gaming covering the time period from 1975 to 2000.


