1) Children begin developing language skills at a young age, with many saying their first words around age 1 and having vocabularies of 30-50 words by age 1.5.
2) Early language development includes creating "idiomorphs", words children invent to refer to objects, as well as beginning to use speech without directly addressing others.
3) As children develop, they progress from one-word "holophrastic" sentences to using more complex grammar and phrase structures in their language.