Finding The Best Kitchen Knives

I just bought a wusthof 8 piece knife set, i got some knives i have never used, and dont know there purpose.?

so if any one could give me some insight on what they are used for that would be great.

6" sandwich knife, i hope it is not just for slicing sandwiches.
4" utility, i am sure i could figure this out but still
And what do i use a paring knife for, i usually use them for smaller stuff like shallots, what else.Thanks.