Teaching your children may seem like a daunting task, but please do not be alarmed: your children are not learning difficult things at first. It starts with colors and shapes, saying "Dada" and "Mama", and all that fun stuff WAY before you get to phonics. You will be singing the ABC's together, reading books to them, teaching them to count, and everything will come together as you keep exposing them to meaningful, helpful things.
One of the items that I found extremely helpful for my son, was (and is) "The Letter Factory" by Leap Frog (I actually found it for free on Vimeo!). Not only did my son start to learn phonics by watching this entertaining 30 or so minute video, but he ENJOYS watching it, and I get to get some housecleaning or something else done! :)
Furthermore, I have started a nice little channel for kids called "Read to Me". I cover topics such as the alphabet and I simply read books that toddlers and preschoolers may enjoy. There will be much more coming to this channel in the future, and every Monday, you should be able to see a new video there. I hope you and your children will really enjoy it (here is a sample video). Enjoy!