ETP can be enabled by clicking on the main menu (or Edit) and then Preferences. From the side menu select 🔒 Privacy & Security.
We recommend that All third-party cookies be blocked. The only pages likely to break under this configuration are social logins (i.e. authentication with services using your Google, Facebook account etc). Social logins are terrible for privacy and they link all services you use to a single identity, that is mostly used for advertising purposes, such as targeted advertising.
When you use a social login you also run the risk of being locked out of services you use, if you lose access to the account. We recommend creating individual accounts with separate passwords. Passwords can be managed with a Password Manager.
For more information about Enhanced Tracking Protection, see Mozilla's for Desktop and Android. The only suggestion we would make is to switch from standard to custom with the configuration listed below.The strict setting will only block known cross-site and/or social media trackers. This may still let through third party cookies that can be used for tracking.
We also suggest clearing history, and persistent data upon close of your browser. If you wish to remain logged in for some websites we suggest setting some exceptions. For desktop users we suggest using the Persistent storage management addons.