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Combat RC / ESC/BEC controllers and motors- Brushed and Brushless

Hey LMR I was hoping you could help me with a few questions the internet/google cannot fully teach me haha.

So I am thinking about maybe making a combat robot/battle bot (http://www.robotmarketplace.com/therobots.html) whatever you want to call it with some left over cash. So I have some questions on Brushless and Brushed motors.

What is the difference between Brushed and Brushless? So far I understand that one has three wires and the other two- +, - , brushless has a servo wire( to make it simple for me ;)    So what am I missing? Is one geared or what?

Also I think I understand that I have to have a ESC with BEC for another battery for the motor. Am I correct? And would I need two? One per motor? 

Sorry for the multiple questions but please help a guy who needs some good teachers to explain it to him :) thanks 

Feel free to ask me anything- Such as my intent/ what I know/ anything. Thanks

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You want to go ask questions at this forum: http://forums.delphiforums.com/THERFL/?
It is the Robot Fighting League's home where all the builders post progress reports and ask their questions.  There is also the RFL facebook page (https://www.facebook.com/BotLeague), but the forum will get you better answers.

Or if you want to do some learning on your own time, there is http://totalinsanity.net/tut/novice.php
That link takes you to the novice tutorials.  They also have some more advanced stuff.

i might just do that thanks

So if I had a reciever - http://www.robotmarketplace.com/products/0-GWR6NIIH.html

two motors- http://robotcombat.com/products/0-PL994.html

and a battery- close to mine or close enough -http://www.robotmarketplace.com/products/0-DTXC2010.html

and a esc-http://www.robotmarketplace.com/products/0-GPMM2025.html

would this all work for what i want? With a 2lb max load on motors?

This ESC is super cheap. Found it from a old post on LMR from Ro-Bot-X.

http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=9090

ya i just need to learn how to find that in my head. i have a problem with that 

 

How big of one do you want to make? What might be the approximate weight? That should help figure out how big and powerful of a motor you need. 

Well Im thinkin it should be under 3 pounds but just to be safe 5lbs. I am planning on using this for base material-http://www.robotmarketplace.com/products/0-WCC-SAMP1.html 

Wheels are plastic and rubber of course but will not be that big. If you need anyother information just ask please thanks

http://www.robotmarketplace.com/products/0-BHG31.html Says 3-10 pounds

There are a few others if you look that say 5-12 pounds. 

Ok I know I can get better motors and so on but lets go back to what I said earlier. Will my motor and BEC work for what I want? thanks for all your help patrick