Nah easy... Just sign up, then there is an app for Mac (or Windows) that you download. Whenever you want to use the VPN / change your IP, you just open the app and login with the info they give you. You can choose different countries and states you want to appear from and stuff also. It's $39.95 a year. I found some coupon thing a couple of years ago when I signed up and I just pay $30 a year. This "deal" is for $60 for 2 years...
http://slickdeals.net/f/7767743-2-ye...vpn-service-60
https://www.privateinternetaccess.com