Hi Latisha,
Here are some activities on Education.com to help make learning to read fun...
http://www.education.com/activity/preschool/reading/
http://www.education.com/activity/kindergarten/reading/
Here are some additional resources on Education.com you may also find helpful...
Learning to Read
http://www.education.com/topic/learning-to-read/
Reading Building Blocks
http://www.education.com/topic/learning-to-read-basics/
Headsprout Reading Software
http://www.education.com/e-learning/reading-software/
Some more tips I'd suggest:
Talk to your children's preschool and/or kindergarten teacher(s) to find out about any particular reading challenges for your kids. Take them to the library and encourage them to check out their favorite books. Read together every night. Practice reading while doing everyday activities, such as reading cereal boxes together at the grocery store, or reading signs on the way to the store. Other JustAsk members have also suggested that you start with the alphabet and then move into reading. See reading Q&A here:
http://www.education.com/answers/learning-to-read/
It's wonderful that you're taking an active role in your children's education. Kudos to you for that!