A few questions:
2) Also (what is the beracha) on ice cream and cookies (cookies mixed in ice cream)?

Thank you

A. 2) On ice cream that contains pieces of cookies and other toppings such as fruits or nuts, it depends how significant these mezonos are. If they are only added to enhance the flavor of the ice cream and the ice cream is the main food intended to be consumed, they became secondary. However, some Poskim (Vesen Brocho 4: B: 3) rule that since mezonos products are important, they maintain their brocho and you recite two blessings (mezonos first)
Horav Shlomo Miller’s Shlit”a opinion is that it is better to recite first a brocho on separate mezonos food not mixed in the ice cream, followed by a shehakol on the ice cream, since the ice cream is the intended food.

Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit’a