Everything above, here's my take.
Online privacy starts with what you share. If you're on social media, even linkedin, you're sharing some information about yourself, pictures. Which is fine, but make sure that you're sharing only with your friends on facebook for example, clean that friend list up as well. But more importantly, you're 100% responsible for what you do post and share, so be conscious of how much and what you share.
You can also use a VPN service to encrypt your web data. This encapsulates all data that goes in and out online, so that even your ISP cannot see what sites you're visiting or what you're downloading. Good for warez sites ONLy if the VPN service supports it. Some reply to DMCA takedowns and trace the VPN IP for notices to be sent... So in other words, a VPN is not a silver bullet, but adds a very effective security layer for privacy.