My first job when I left school was working on the council laying pavements, or at least labouring for the pavoirs. If they have a gap between each slab lift it on one edge with a spade, or even better if you can get one, a pick axe with a flat blade on one side. Once up then walk the slab, don't try and lift it unless you have help.
Or
10 minutes with a sledge hammer and lay crazy paving.