I try to suggest people just stop giving facebook their information. Don't share anything, don't like anything, absolutely never install "apps" or click ads. Avoid facebook as a sign on provider to other sites. Use good privacy tools in your browser and never hit fb "like" buttons on another site. Avoid linking your accounts to facebook from other applications (instagram, spotify, ...).
I'd love to see a browser plugin that did all this that I could recommend to friends and relatives. A plugin that simply made a visit to facebook completely useless to facebook.