My Baby (Now 4 in August) has show signs of wanting to learn , He really enjoys joining in and asks "Can I do my learning Mummy?" He only lasts maybe 20 minutes before toddling off. He just about writes his name, can count up to 20 (minus a couple!) Ditto his alphabet . He can also recognise about 2/3 of the alphabet, all his colours, and Read a few words. I'm really proud of him.
I have found many resources for little ones. Hope some are of use to you! Also have a good look as many have other age resources. Have fun!