I said my first word (gorgeous) at 4 months old. I took my first steps at 9 months. I never crawled before my first steps, but after eye surgery at 11 months old I crawled for a couple of months while I got used to my new visual world. I'd been seeing double all the time before the surgery, and after it I saw a much more normal single image. This changed the way I saw things enough to make me lose confidence in walking for a while. Later, I lost the sight in my left eye, but I never returned to crawling after that.
Despite doing these milestones early, I had some differences and difficulties. I was very clumsy, and fell often. I took forever to learn how to throw or catch a ball, ride a two-wheeler, skate, etc. I made up my own words and eventually my own language (spoken and written, and eventually signed), loved alliteration, was fascinated with idioms, metaphors, similes, slang, and archaic language. I loved to read, and used words I met in my reading but were not used in other peoples' conversations, so I was often called a 'walking dictionary'. I also spoke very formally compared to other kids and even adults. I was also unable to speak when I was especially stressed, scared, or overwhelmed. This led to my being unable to speak at school (the environment in which I was the most stressed and scared), and some years I spoke barely or not at all when at school. This has lasted even into adulthood.. Get me especially stressed or upset and I can't talk.. It's like something is strangling the speech from me. I can't get get the words past the constricting lump in my throat.