You can find information on this in your local electronic store, you can also go onto radioshack and find information there, as they manufacture most of their radio control devices.
You can find parts for your radio controlled truck in hobby shops. You can buy batteries for your radio controlled truck in grocery stores, electronic stores, etc.
A radio controlled tank would be controlled like any other type of remote control vehicle, though a tank would be much stronger than a car perhaps. You can find more information here: r-c-tanks.com
Hobby stores such as Hobby-Lobby.com and Towerhobbies.com have a variety of electric radio controlled airplanes to choose from. Prices for electric radio controlled airplanes range from $80 to $350.
One can find information about The Radio Blog Club on the official site Radio Blog Club. One can also find information about The Radio Blog Club on Wikipedia.
There are a couple of websites that sell small boats that are radio controlled in a way a child could use. You can check out the website, Radio Controlled Toys, to purchase.
You can find broadcast information for the CNN radio online at the official CNN website. You can also find information relating to CNN radio broadcasts on the Turner website.
The Dusty Crophopper RC Plane can be brought from websites that sells RC planes. Looking for hobby shops that sells remote controlled planes more than likely will have the model you are looking for or can help point you into the right direction to find one.
Information about Bombardier Global Express planes can be found from many different resources. Some online resources with information on these planes include Bombardier and Business Air Craft.
I would visit http://www.rccartalk.com/ to find that information. They have a variety of articles regarding different manufacturers and how their products hold up.
You can find information on Radio Control Cars at A Main Hobbies online. They have information on all Radio Control Cars, even for beginners. A Main Hobbies can give you information on both Electric and Nitro Radio Control Cars.
It depends on your definition of cheap. There are many radio controlled aircrafts that are under $100. You can now find some that are half of that. You can shop for cheaper aircrafts at http://www.redrockethobbies.com/
RC Universe is a website dedicated to all things that are radio controlled. For example, one can find forums, photos, and sales of radio controlled cars, airplanes, and more.