The easiest place to start is here. Right now. Just start in. Just write.
Sometimes it is easy to write, sometimes it is more difficult. But the easiest way to write is to, er, write. Think of a moment that happened today or in the last few days that was particularly memorable. Or pick something you noticed -- a conversation heard, a small action seen -- and run with it. Angry about something? Tell why. Happy about something? Tell the story.
Or just write small. Or share some photographs. Or click on Audio Record and tell a story.
(Photo credit: YWP Photo Library, photo by Livia Ball, 2017)