How To Read A Privacy Policy In Ten Minutes
Four sections carry nearly all the meaning. The rest is architecture.

Privacy policies are long because they are legal documents drafted to cover every case, not explanations written to inform. That does not make them unreadable — it means most of the document is not where the meaning is.
Start with sharing
Find the section on disclosure to third parties. Collection is rarely the risk; distribution is. Read whether data is shared with advertising partners, data brokers, or affiliates, and whether 'affiliates' is defined.
Look specifically for whether sharing is described as a sale, and whether an opt-out exists. Under several state privacy laws, that framing carries legal consequences.
Then retention
Look for how long data is kept. Vague language — kept as long as necessary for business purposes — means indefinitely. A policy with specific retention periods is a policy written by someone who has actually thought about deletion.
Then your rights
Find the section on access, correction and deletion, and note the mechanism. A clear web form is a real right. An email address that has to be requested through support is a right that is technically available and practically discouraging.
Note also whether rights are offered to everyone or only to residents of particular states. Some companies extend them universally; many do not.
Then changes
Find how the policy may be amended. If it can change with notice only by posting a revised version, then whatever you agreed today is provisional. Policies that commit to advance notice of material changes, or to obtaining fresh consent, are meaningfully stronger.
What to ignore
Security sections are almost universally generic and tell you very little. Lengthy lists of collected data types matter less than what happens to it. Cookie tables are useful only if you intend to act on them.
Ten minutes on sharing, retention, rights and amendment gives you most of what the document actually says.