Start to share knowledge today (2017-10-04), although I am still a rookie.
First, set yourself a goal. It's simple, it's a little hard to do, but it's about persistence.
Goal: Keep writing a diary every day, sharing your life, work, what you see and hear, even if it is technology sharing.
I am doing Android development, will also point PHP, there are like-minded friends who want to progress together with me can share their own dribs and drabs.
I am a little rookie, I believe that there will be harvest of persistence.