ReactJS dev thought process

Hello ReactJS Gurus,

I am new to Reactjs. Does any one know of a training or a trainer where they could teach how to think before beginning to write reactjs code. The thing is I see people write these big projects which are complicated to read. I want to know how they start design process and sync that design to the react code.. and finally fill all the nitty gritty details in Reactjs. I have gone through some basic training and have understood some advance concepts. But i couldn’t get the idea of how they confidently take a UI idea and then take it to component level and fill in the details. Any one has any training recommendations on this?

Thanks a lot.
Sri