TV technology, I can't tell HD from 3D!

A couple of weeks back, I was saddened by the loss of my bedroom tv. The sound was fine but the picture went down to a single line across the screen and that will never do! Being the resourceful single lady that I am, I used my office chair to load the living room tv and roll it into the bedroom. I'm just not strong enough to carry it by myself. I was smart to take plenty of measurements first, good thing too because there was very little room in the bedroom armoir and that would have been an ugly scene!

Now that I will be moving soon, I will wait to purchase another tv but frankly, I have no idea what means what in tvs these days! DPI and HD and 3D and Plasma and all the other options. Heck, now you can even use these new tvs as computer monitors! Take the Sony VAIO for instance, sounds like a tv but also sounds like a computer! I wish I could just say, ok, here's some money just give me whatever will fit right here and poof! The perfect tv would appear. Decisions, decisions...glad I have some time before I need to worry about it :)