tibbr api for Apps

Hi, we have just installed tibbr at our company and i have a requirements regarding the  integration of our legacy applications with tibbr, I want to explore idea of creating company apps on tibbr platform.

I need some  examples and developent/coding tutorials to start with. it would be helpful if  someone could suggest api, examples and reading materials to understand and start with tibber, where I can find all of these?