Krystalzkris:
Who knows about bamboo app and how to use it in stock buying

You can go through the previous pages to have an overview.
But here is an article I compiled you can read in under 5 minutes.
https://medium.com/nairastack/investing-in-u-s-stocks-bamboo-chaka-or-trove-ce9347d908e4

Fun fact though: Just download all 3, they all have their strengths and weaknesses.