new to bikes

[SpokeyDokey]

Picking my bike up today. Really excited...feels like Christmas. Got everything I need now from helmet to saddle bag to cycle shorts.
I noticed looking at pictures yesterday that there is no quick release for the seat adjustment. Can I buy one of these, and which one/size should I get?

Oh no you haven't - just wait and see!

Enjoy your bike and may your inner child stay with you all your life - keeps you young!