I want to share my experience in teaching children to be able to read at an early age. When children get to know objects and name objects, it means children have begun to recognize shapes. At that time the child has begun to be introduced to the form of letters.
The media that I use is a newspaper because it's easy to get. Every day I usually only introduce one uppercase letter. The first time I introduce one large printed letter. Usually this letter is at the beginning of the article or article title. Then the child is told to look for the same letter in the newspaper. The next day, the letters that have been introduced are asked again. If the child has remembered then new letters can be added. And so on until the child knows all the letters. In introducing letters it does not have to be sequential, but try to choose letters that are not similar in shape before the child's makeup is not confused.
Then learn to arrange consonants and vowels like BA, BI, BU, BO, BE, CA, CI and so on. For this section it turned out to be rather difficult when I taught by writing. Therefore I taught it verbally. So I mentioned the combination of letters then the child mentioned the sound. When the child is fluent verbally, it can finally be when writing.
After that increase learning words and sentences. At the age of 3 years, my child was finally able to read fluently.