Americancentric, but: I would suggest that if you have a phone, programming the numbers for the local police, a good urgent care clinic in your area (a wiser choice than the ER, when possible), and your garage (especially if you don't have AAA). 911 is an important tool, but it is not always the best tool for the job, and the cost of updating your address book is essentially zero.
Oh, and perhaps the New York Public Library’s virtual reference service (depending on your long-distance plan).
This thread is for asking any questions that might seem obvious, tangential, silly or what-have-you. Don't be shy, everyone has holes in their knowledge, though the fewer and the smaller we can make them, the better.
Please be respectful of other people's admitting ignorance and don't mock them for it, as they're doing a noble thing.
To any future monthly posters of SQ threads, please remember to add the "stupid_questions" tag.