Floorball drills for J18 (J20), which cover all areas of the game, forecheck, offensive plays, break outs, etc. Floorball drills for J18 (J20) are available on Flrball.com in the form of eBooks or printed books, the books are also available in most online bookstores.
Buy the floorball books from online bookstores like Amazon, Wallmart, Alibris, AbeBooks, Bokus, Bookshop, BoD etc. or search through Google