Finally you are on the spot! Doesn't matter whether you want just to pay shooshine or to speak in public. You always have to make yourself understood. That is not easy. I suggest you try any good software, for learning not only to speak, but also to write and read.
Bykì, is for Bengali, and gives you no hint about the way you can handwrite.
If you are going to Bangladesh...
If you like to learn also to handwrite...
Easy Bangla Software is the right choice for you, in my opinion,
I suggest you "let" Easy Learn Bangla software "be" your personal teacher.
Uncle Dino
The back ground music is scary.
ragimon 2 weeks ago