If you're an out-of-towner, you probably heard on The Daily Show that this "simultaneously magnificent and useless" city can be a tad confusing. And we expect to have a lot of confused people on and around the National Mall this Saturday.

Don't worry. We've got your back.

We set up @TBDGuide on Twitter to field your questions about anything related to the rally or the D.C. area. Which train do you take to get to Columbia Heights, and how do you find the station? We'll tell you. In the mood for some falafel? We'll direct you to the good ones. Wondering why there's no J Street between I and K Streets? We got it. Have absolutely no idea what's going on or where you are? We'll do what we can.

Ask us anything, and our staff of D.C. veterans will do our best to quickly respond. If we don't know the answer, we'll ask our followers.

We are at your service. Fire away.