If you are going to Bulgaria than BG1000 is what you need in order to impress your Bulgarian hosts and new friends starting right from the airport. Learn the Cyrillic alphabet, the pronouns, then some basic phrases (you know the "Hello-How are you-Goodbye" stuff), the numbers and also words for animals, colors, food... All of this is free and presented in a fun way - you are studying the new words and phrases while doing interesting excercises.