How do I mount stamps?

I have a lot of lovely stamps, but there all on a plastic type sheet. How do first I cut them out successfully (was thinking craft knife) and how do I mount them onto a block so I can use them?

Any help/advice would be appreciated, seems a shame for them to be lying unloved in a drawer.

Are they clear stamps? If so peel them off the plastic sheet. Don't cut into the plastic sheet just cut around the stamps if you need to although most clear stamps come ready cut. If they are on a plastic sheet they sound like cling stamps so you need to put them on an acrylic block or if you don't have one for now put it on a CD or DVD case as a mount for stamping. When you have finished peel it off and put it back onto the plastic storage sheet.

Not sure to be honest, haven't tried peeling them off. But will try this and thank you :)

They will either be clear (you can see through them) or rubber (mostly red or grey). Do you have a pic of them or is there a brand/any sort of packaging that would help identify them?

They are clear and unfortunately not, as I've said just lying in a drawer.

So as I said you should be able to peel them off the plastic sheet and they should be already cut out. They should cling to an acrylic block if you have one or else improvise with a CD/DVD case/diecutting plate/anything solid and transparent, add some ink and stamp away.. Lots of 'should's here but you get the gist.

I do, thank you :)