There are 2 kind of surfing for me: 1. I use Traffic Browser, open a lot of tab then focus on surfing. 2. Using Chrome, only open 1-3 tabs which is slow surfing while do other jobs or watching video (windowed/small screen) on top.
If you want to try mining, eobot.com is still legit. Its ROI is a loooooong one, 6-21 months and also their ROI is updated regularly as the bitcoin price volatility. You can get one of their equipment if their operating fee is higher than its income. There also live chat with other members so you can ask anything there.