informative

providing a lot of useful information

providing a great deal of useful information, often in an impressive way

providing a very large amount of useful information

providing a moderate or reasonable amount of useful information

providing more useful information than usual or than other things

providing more useful information than usual; notably informative

having the capacity to provide useful information in the future

providing useful information in a very pleasant or impressive way

to provide useful or interesting information

to discover that something provides useful information

to turn out to be useful or interesting

providing useful information on a particular subject