ive read a lot of books and watched many many videos, even the dnegs masterclass.
so imo
the phil helmuth book was crushingly disappointing.. the book of daniel negreanu was okay so is his masterclass. it definately helped to improve my game! but its not for beginners!
i would recommend Jonathan Little on Youtube and twitch livestreams. Also Daniel negreanu has a view quick tipp videos on youtube.
check it out