Further to the above, you can also plant some of it in pots to ensure that you will still have fresh growing ginger when this supply is exhausted and you can also give some plants away as presents if you find you have far too much to cope with food wise. If you allow the plants to flower they can be quite attractive often with fiery red flowers.
http://farm2.static.flickr.com/1159/1431016155 _6ae8c188be.jpg
You can also place some ginger root into a clean tea towel and beat the living daylights out of it with a rolling pin until it is quite broken down. Then hold the tea towel over a bowl and twist the part with the ginger in it. Keep twisting tighter and tighter to extract the ginger juice.
Use some of this in a mug of hot water with a little lemon and honey as required to make a healthy and pleasant drink. Very good for colds and sore throats. This ginger juice is quite strong in flavour so experiment to get it right for you.
Just found this very easy looking recipe for crystalised ginger.
http://homecooking.about.com/od/dessertrecipes /ht/crystalginger.htm
I doubt this will keep but perhaps you can invite some friends for a curry night (assuming that you like curry of course).
http://www.numkitchen.com/p2_ginger%20pickle.h tm
I would suggest that you just Google Ginger recipes. Whatever you do, have fun.