how to buy a good computer?

In all depends on what your looking for honestly. But really any newer computer of today will suit most if not all your needs. Unless you are a hardcore gamer. I use a Dell, Never had a problem worth mentioning. I really like Lenovo or Acer in terms of a laptop or notebook. If your going with a desktop I would suggest a Dell or HP. Check out Tigerdirect.com or Newegg.com for some nice deals! ;) Anything between $500 and $1000 will satisfy and cover all your needs.

Yes, bent rightly said. It depends on your needs, for what purpose you are going to purchase new computer. It would be better to determine your needs and then purchase computer because maybe you purchase expensive one and you do not have enough work. So, here your needs play very important role and perhaps save you from not being more expensive. Go through reviews, i will help you to opt one from the series.

It depends really what your going to use the computer for. Is it mostly for office work, or gaming, or everyday use? Are you looking at something expensive or not too expensive? Is it a laptop or a desktop computer? Do you want a sleek design or it doesn't matter? I currently have an refurbished HP Tower and it's running pretty well. You could also look into Acer. Good luck!