この本には勉強にめっちゃ役立つ素晴らしい素材が入ってるよ

Meaning: this book has some amazing material that really helps with studying

この: this, these
本: book, this, main, present, tome, volume, origin, principal
に: in, to, on, at, into, upon
は: a, the, is, am, are, will
勉強: study, learn, learning, discount, diligence, reduction
に: in, to, on, at, into, upon
めっちゃ: really, super, very, extremely
役立つ: help, helpful
素晴らしい: great, amazing, wonderful, fantastic, excellent, fine, awesome, magnificent, splendid, superb
素材: material, ingredient, ingredients, fabric, texture
が: is, there, but, ga, will, however
入る: enter, come in, join, go in, hold, get in, contain, enroll, accommodate
てる: you, i'm, doing, to do
よ: the, yo, ll