Your best resource for researching the best telescopes for kids is undoubtedly the internet. If your son or daughter is asking you about telescopes or is developing an interest in astronomy then you'll definitely want to search for information online. A quick Google search will reveal a number of astronomy websites and forums.
You can be sure that every astronomy website will have information relating to the best telescopes for kids. Also, if you really want to make an informed purchase, consider joining a few astronomy forums and inquiring there. Every astronomy forum will have professionals who will be more than willing to share with you their opinions about the best telescopes for kids.
A couple things that you may want to consider before purchasing a telescope for your little one are usability and cost.
Ask your son or daughter what they would use a telescope for. If they want to view the moon or the closer planets, then you'll have no trouble finding a beginner telescope that is user friendly and also cheaper than telescopes that are designed to view the outer planets and stars.
If price is your bottom line, then trying a Google search for things like "best beginner telescope - under 0" or whatever your price range. Also, you may find information about the best telescopes for kids in your local sporting goods store. They don't always have a wide selection, but they will normally carry a few lower cost items and maybe a few other pieces of astronomy gear. Your local retailers can be a great resource as far as trying out equipment and taking a good look at what you'll end up buying.
However I would advise that if you are set on buying a telescope for the kids, the best telescopes for kids will be cheaper online. There are a number of astronomy gear retailers with items regularly on sale. Amazon.com is increasingly carrying more and more gear at affordable prices for the beginner astronomer.
You can also find review sites or buying guide sites online which will you give you all of the information you will need to make sure that your little guy or gal will be happy with their new telescope. You'll also find that some of the best telescopes for kids will last your children for years to come if they are taken care of properly. Again, plenty of information can be found online about the proper maintenance of a telescope. There also a number of books on the subject which can be found online or in your local bookstore.
So if you're looking for the best telescopes for kids you definitely be doing your research online and visiting your local retailers to try out a few things, but you'll want to make your purchase online as prices will be lower.