First for me: Does the teacher know you're visiting a model site online during the computer class? If so, good for him/her! (Oh, blast! I forgot how weird the time stamps are sometimes for messages here! They seem to don't bear any discernable relationship to any "real time zones", so that in-school time stamp might not be "in-school" at all, I don't suppose!)

Second: Always use as good of a skill in English as you have when online where adults might go. Most of us hate to try reading the childish writing manners that kids use in instant messaging, text messaging, and on chat lines! So we probably won't bother answering if the manners are really bad.

You don't need to add the difficulties of a third line, or some expensive electronics, to the plain manual skills of flying a CL plane. Throttling a CL plane isn't at all simple.

The strings that come with the Cox plane sets will stretch way too much and are very draggy, so they have to be short, which makes flying quite difficult. I will add the URL for a web site on which the specific interests of Junior (that's an AMA class, and AMA is the national club that more modellers belong to than to anything else we are involved in)-age fliers are addressed in some detail.

Try to find a full-service hobby shop you can get to and see about ordering Brodak supplies there, or order by mail via the internet. You need .012 by 35' braided wire to start with, and don't twist the lines more than they are already -- unroll them by sticking a finger in the center hole and allowing the lines to roll off. Don't let any loops drop off the sides of the reel. When re-rolling, insert an index finger from each hand in the holes and wind the lines up, don't "wrap them" around the reel from the sides.
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When you get "good" at flying, and can maintain your equipment as well or better than any adult, exchange the .012's for .008 by 35' braided lines for flying in grass, that's really all you will need by then. Starting out, braided lines that thin are going to be too easily damaged and ruined as you learn what you need to know. But even adults with plenty of experience are likely to keep using 012's on hard surfaces (lots of abrasion wear on the lines from the grit on a paved or concrete surface).

(Edit: I've not been at all well impressed with the suitability of Norvel's products for beginners. The fits are quite often purely ridiculously tight. The limitations on warranty service are extrememly poor business practice. If the engine out of the RTF plane is unusable, the Cox engines are much, much more user-friendly than the Norvels.) The SIG (Baby) Skyray kit makes into a very good primary trainer.

Eventually, you will reach the point at which the limitations of an .049 motor are hindering your progress. There are a number of RC engines in the .10 size that will work fine with a SIG Akromaster after you wire the throttle open, or get someone's aftermarket venturi insert. This next size up is far better for learning a few stunts and for flying when the weather isn't absolutely perfect.

This is a place where many of the CL web site URL's are all collected in one place. Phil Brown hosts the clearing house. It's a good one for a "Favorite".

http://home.att.net/~philbrown36641s5/clhomepage.html

Heman Lee's site has free plans and other helpful information for folks like you to download, if you want to try scratchbuilding just from sheets of balsa wood.

http://www.aeromaniacs.com/


Kiwi

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