tl;dr:
ads are everywhere and aren’t so fun everyone is trying to track you (for better or worse) Pi Hole is awesome; it’s a network-level adblocker and runs on a Raspberry Pi streisand gives you a quick way to set up a censorship-resistant and secure server running a number of VPNs/proxies (OpenVPN, Shadowsocks, Wireguard, and more!) you can combine them to get a secure & resilient connection with network-level ad-blocking everywhere you go (iOS/android, linux, mac OS, windows, etc.