CNET reviews offers helpful tips for purchasing a new TV. They compare sizes, prices, quality, and other components in purchasing your own. They can be found here: http://reviews.cnet.com/TV-buying-guide/
Try ~Consumer Reports' online.
The TV guide has always been one of the best TV buying guide. You can pick one up at any Walgreens or gas station in their news stand. You can also go online.
I have found that the website http://reviews.cnet.com/best-led-TVs/ offers an informative, well rounded review of LED televisions. In addition, the reviews are done in accordance with the different name brands and styles.
This website is the specific place to go to find information on buying a television. Here is the link: www.televisioninfo.com/Buying-Guide You will need to copy and paste it into your browser.
This all depends on type, size, and budget. For a complete TV buying guide, see the following guide: http://electronics.howstuffworks.com/tv-buying-guide.htm
CNet has a great guide to buying an HDTV, including what to look for in an LCD TV. Wikipedia's LCD TV page can be pretty beneficial in helping you know what to look for when purchasing an LCD TV.
QVC seems to be a top 5 places for TV buying guide. Its a household name and very trustworthy with the BBB industry. Wal-Mart also have good deals on TV and electronics.
In the world today, technology can be rather confusing. If you visit future shops website link: http://www.futureshop.ca/en-CA/research/LCD-TV-buying-guide/rc8597.aspx you will find many helpful tips about shopping for a Television.
One can find a Cox cable TV guide online by going directly to the main Cox Communications website. There one can look for the area in which they subscribe to TV services and check the TV guide for that area.
When looking to purchase an activity center for a baby there is a website offering a baby activity center buying guide. The Consumer Reports website offers the guide with instant online access to the information.
There are two online guides to help with buying a car - Edmunds.com and Kelley Blue Book (kbb.com).
SKY TV typically lists its television guide online for free. You can go to their website and sign-up for a bi-weekly mail subscription to their latest TV guide.