To be an expert, one must first know nothing and build upon nothing.
I started running at the age of 15 without knowing how to until I joined Cross Country. My first race (5km) I ran in 30 minutes with walking. With proper training and dieting, on my last race on the same year, I ran the same distance in 20 minutes without a single stop.
Since then I have taught friends and family, hopefully through this site, I can help many more.