Newbie starting out bit stuck :(

Im working through the book Unity 3D game by example.

Im trying to add a bounce to the sphere I have created however on the sphere collider, there is no drop down menu to select "Bouncy"

If I click the target symbol this box appears however nothing appears in the search items :O

I must add when starting it said include standard.assessts however there seemed to be only the option for the mobile to be added so I assumed this was added by default?

Thanks for any help?

That book covers Unity 2, so some things don't apply. There isn't a drop-down selection anymore, instead there's a selector window (which you already found). Nothing is added by default--there isn't a standard assets package anymore, instead there are many standard assets. In this case you'd import the Physic Materials package.