be on the ball
know the score
know what's what
know what's going on
be with it
sussed
hip
clueful
know
informatively
up on
knowledgeably
instructively
informingly
informedly
keep up
informativity
literatured
informativeness
beseek
cognizant
illuminatory
abreast
au fait
au courant
perspicacious
sapient
sagacious
intelligent
appraise
well-read
track
teach
learn
acquainted
scious
crush it
up
in the loop
consultatively
post
well-informed
insightfully
knowledgeable
know-everything
know like the back of one's hand
alliteratively
preparatorily
across
up to the mark