Use a Privacy-Respecting Browser, Brave and Firefox are good options. Set your default search to a non-tracking engine, such as DuckDuckGoDo not enter any information on a non-HTTPS website (look for the lock icon), consider using HTTPS-Everywhere to make this easierBlock invasive 3rd-party trackers and ads using an extension like Privacy Badger or uBlockKeep your browser up-to-date, explore the privacy settings and remove unnecessary add-ons/ extensionsConsider using compartmentalization to separate different areas of your browsing (such as work, social, shopping etc), in order to reduce tracking. This can be done with Firefox Containers, or by using separate browsers or browser profilesDon't allow your browser to save your passwords or auto-fill personal details (instead use a password manager, and disable your browsers own auto-fill)Clear your cookies, session data and cache regularly. An extension such as Cookie-Auto-Delete can be used to automate thisDon't sign into your browser, as it can link further data to your identity. If you need to, you can use an open source bookmark sync appConsider using Decentraleyes to decrease the number of trackable CDN requests your device makesTest your browser using a tool like Panopticlick to ensure there are no major issues. BrowserLeaks and Am I Unique are also useful for exploring what device info you are exposing to websitesFor anonymous browsing use The Tor Browser, and avoid logging into any of your personal accounts