Be well-informed synonyms

What is another word for Be well-informed?

• keep abreast of
• stay current
• keep up on
• be in the know
• keep up to date
• follow
• know inside out
• have dead to rights
• be master of
• know well
• know by heart
• have down cold
• know backwards
• know damn well
• know full well
• be up on
• have a good knowledge of
• have down pat
• know darn well
• know like a book
• have a thorough knowledge of
• have in one's head
• know by rote
• know down to the ground