Btw, I got distracted by my Waldorf mutterings. I have several thoughts on teaching toddlers to read, as I had two toddlers who expressed interest and who I offered varying degrees of instruction to.

--Don't develop any particular expectations even if you see some big interesting developments. DD had a bunch of sight words around 18 months, could sound out around 3, but didn't actually read till almost 5.

--Be careful not to give this activity more value and excitement than any other exploration you'd do with your kid, from chalk to ctaching bugs. Let the kid lead. Then you'll not have to worry about hothousing, if that nags at you.