owards the main road inside Giap Bat station, you will see signs with numbers indicating the stops of different bus lines.
Most of the "open-tour" bus itineraries either begin or end in Hanoi, with Hue the next (or previous) stop (12-14 hr, US$8-9), and from there to Hoi An, Nha Trang, Dalat, Mui Ne, Ho Chi Minh City, and other cities in Vietnam, depending on the bus company. Most seem to stop at their office which could be right next to the old district / most backpacker hotels. Check when booking ticket.
Many of the same companies also sell tickets to Vientiane and Savannakhet in Laos (US$16-18). Do some research before you buy a ticket as rattle-trap scam buses abound on this route.
See Ho Chi Minh City to Shanghai overland if you're interested in crossing over to China by bus or train
