Bulgarians shake their head for yes and nod for no. Locals dealing with tourists often switch to the foreign convention, which makes things worse rather than better — when it matters, ask for a spoken answer.
Take your shoes off inside a home; slippers will usually be offered. Bring something small if you are invited to eat.
On 1 March people give each other martenitsi, red-and-white tassels worn until the first stork or blossom is seen, then tied to a tree. If someone gives you one, wear it.
Name days are often celebrated more than birthdays. In churches and monasteries, dress modestly, do not photograph with flash, and stand rather than sit during a service.
In the mountains, greeting people you pass is normal and expected.
