informative is anything that further educates someone
e.x. book, encyclopedia, or in some cases, the internet
Having a practical or beneficial use.
Providing information; especially, providing useful or interesting information.
“I read a very informative newspaper article on that subject last week.”
Not specifying requirements, but merely providing information.
Formative; having power to form.
able to be used for a practical purpose or in several ways
“aspirins are useful for headaches”
very able or competent in a particular area
“a useful pace bowler”