and 4×4 posts in concrete, but use dek blocks if you cannot dig and mix the concrete.
2×6 decking 22 2x6x10
2×6 joists 12 2x6x10
4×4 posts 4 4x4x8
dek blocks 8 each
concrete 4 bags 80lb
fasteners 16D Galv, ring shanked
This should get you going. you might have a frost line thing to consider, where I live we do not, so my material is based on my area. Leave a slight spacing for drainage, about 1/4 inch.
Hope this helps a bit.