I can read!

Online Reading Webpages

Excellent presentation of individual sounds and their combination. Depending on how confortable your kid is you can increase the level of difficulty. Find it here.

I Can Read section, following the order of the stories, go through the whole list always making sure you don't move on until your kid has mastered each individual sound.

Super reading site. You need to open a free account and go to the ebooks section. Once there, you need to filter by level, beginning at the very first one. You can find it here.