I would do a pinned post with all the important websites listed with bulletpoints. Then a word or a sentence explaining what it is used for.
I would cover keychain and link "How to" posts for every browser.
I would recommend peakd as primary UI.
I would explain witness voting, vests, HP, HBD and HIVE, delegations, dapps, second layer(Hive-engine), smts, communities and "dos and don'ts" (HIVE netiquette)

If neebies know all of the above they are good to go.