Alphabet Learn Letters

Learning alphabet letters ABCDE need to introduce in children under 2 years refer wrote the advice I give.
My first child was about to recognize the letters at the age of 1.5 years. If it's his will, before 1 year may also begin to be introduced letters, how:
Try to stick to pictures along with letters from AZ in the walls of a child's room or family room (essentially a regular venue he plays), the image that I meant like a sheet almost as big manila contain the letters AZ and no picture, example A picture apple, B picture Butterfly, and so on. Keep the existing picture because if children do not tend to get bored quickly.