Although this set is labeled "junior" the pieces are regular Lego-sized pieces. They are not larger than normal Legos and are not Duplo.
Inventory of parts can be found here: https://www.toysperiod.com/lego-set-reference/4-juniors/spider-man/spider-man-2/lego-4860-doc-ocks-cafe-attack/ (copy/paste address into search bar).
Building Instructions can be found here: https://www.lego.com/cdn/product-assets/product.bi.core.pdf/4249779.pdf (copy/paste address into search bar).