my daughter can put her shoes on when she was 2 year and 2 months (魔術貼個隻). Now I train her to wear socks by herself. With a little bit help, she can do it.
My daughter is able to complete both tasks at 2.5 yrs old. Thanks to the teachers at her nursery class! She can also distinguish the left shoe from the right shoe.
My son couldn't do these until age 3.