Collocations for informed - adj.

be
keep, stay
keep sb

closely, well
The kids are much better informed than I was at their age.

fully, properly, truly
Consumers must be fully informed of the services available.

adequately, reasonably
I offer my observations as those of an interested and reasonably informed member of the general public.

badly, ill, poorly
reliably
I am reliably informed that there are plans to close this school.

politically
a politically informed public

historically, theoretically
theoretically informed research

about
They were poorly informed about their rights.

of
We will keep you informed of any developments.

on
Keep me informed on progress.

Informed is used with these nouns:
choice, consent, decision, electorate, guess, judgement, observer, opinion, reader, source, view