S.H.
The book, "What To Expect The First Year."
MAIN thing, is to understand the developmental age-related stages of a baby and child. Otherwise, a parent will not know, what is usual or not.... nor try to 'make' their baby like all the others and be disappointed if their baby is not all the SAME as others. Because, each baby is different. That is a KEY thing, for a new parent, to realize.
No child is a 'template.' BUT.... if you understand baby/child development... then, you can best know what to do or not.
THAT is key.
All the best,
Susan