I need some useful hdtv information. I need to purchase a new television set, and all of my friends and family members always telling me that I need to buy a high definition television. I do not even know what hdtv is. Everybody keeps telling me that the picture is larger and clearer, but I still do not understand the whole concept. I do not know what the difference is between a high definition television and a typical television like I used to have. I do know that high definition televisions are more expensive than a usual ones. Is it worth it? Where can I find relevant information on high definition televisions, so I can make an informed decision about which tv set to purchase?