Ahh, yes beetrootboy ... A lot of gardeners do save seeds and tubours and take cuttings and it's a very good idea which saves money.
You can't save seed from F1 hybrids though because they won't grow the same as the original ones (difficult science thing there bb).
And sometimes saving things from one year to the next can carry diseases over to your new crop. So simetimes it is best to start again with fresh stuff.