Interesting thread! My youngest taught herself the alphabet & sounds with the starfall app before 18 monhts (primarily car rides). At 2 she would point out letters while we were out, sometimes sounding out a little, we thought she'd keep going but her interests went elsewhere and we saw no reason to redirect our own personal cyclone back to learning to read at the ripe old age of 2. Two years later at 3.5yrs she's just now having an explosion of pre-reading skills, "[word] starts with..., like [otherword] starts with..." "[word] sounds like [otherword]" but she's more interested in getting us to tell her how to spell words than she is in trying to read books. I assume she'll read well before school though...
