briefed

abreast knowledgeable learned

acquainted apprized enlightened posted primed savvy up versed

au courant au fait erudite expert familiar in the know into know the score know what's what on top of reliable tuned-in up on up-to-date versant well-read wise to

ignorant uninformed

unaware unknowledgeable

advised

educated informed learned

knowledgeable

ignorant stupid uninformed