Place it in a sunny windowsill where you will see it every day (preferably multiple times!) . Kitchen windowsills are good as they tend not to be above a radiator (the heat will mean the flowers go over quicker = less time to enjoy them!)
When you catch their gorgeousness out of the corner of your eye, stick your finger in the soil around them (do this daily if possible) if it feels dry, give them some water. If it feels wet, leave them alone, bulbs don't like to be too wet!
Other than that, leave them to do their thing and when they do, enjoy their beautiful flowers and scent (sorry smell-o-vision's not yet been invented for blogging, but trust me its divine!).
Once they have finished flowering, you'll know because all the flowers will look dry and sad, cut off the flowering stalk only (i.e. leave the leaves attached to the bulbs).
Some say the forced bulbs are done after they've flowered once, but i've always taken mine out of the soil and left them to dry after the leaves have gone yellow and shrivelled. Once dry I wrap them in newspaper and store them somewhere cool, dark and dry until the following autumn when I plant them into outdoor pots or straight into the ground and they've aways flowered again.
So in the spirit of being less 'chuck and buy new' as a society, i'd say keep em, give em some love and they may just reward you again next year :)
They probably wouldn't like being forced again though i.e. forced to flower earlier than their usual flowering time (Feb/March) hence why i recommend planting them outside and just letting them get on with it next year.
Disclaimer: Hyacinth bulbs are poisonous, so don't eat them/ let any children or pets you may own eat them and always wear gloves when you handle them!