Hello, & welcome!
It sounds like our daughter's are very close in age - my daughter will be turning 5 in a couple of months.
We were lucky to be able to find out about reading when she was really little, so she is reading very well now - her vocabulary was tested in January at a grade 3, 9th month level.
Although we started very early, your daughter is still very young too & will still get a head start if you start working on reading now. If it was me, I would start with one of two options. 1. Use the Little Reader curriculum which will fast flash the words for you, or 2, Use the Little Reader print function to print out cards & fast flash them. Fast flashing is the fastest way that I know of to teach words & if it were me, I would be working more intensively since she is so close to school age.
It is great that you are working with her at home one on one, as she will likely learn faster that way. Although our dd goes to preschool, we have choosen to put her in a social preschool because we do the academics at home any ways & feel she would be bored when the other kids are learning letters & she is reading.
You may also want to look into neurodevelopmental programs. That is what got us started on early learning & the results have been wonderful.
Check out my blog for more details - the link is in my siggy. My Important Posts page has quite a bit of information, but please feel to ask any questions you may have.
You may also be interested in this board too:
http://community.babycenter.com/groups/a6729133/unlimited_potential