Halp to connect all parts as 1 working pc

Dear carma
I have a control box with monitor that is connected to a little moving tank
I can control the movement forward and backwards.
I am using it to enter a small holes in the ground or in a caves.
I want to improve it.
I want to have more details accept video and sound.
And I want all the data to be shown on the screen, so when I will record the video I will see on the movie the distance and the degrees of the way,I mean to know how down or up the way is.
That's way I bought the 1. Triple Axis accelerometer (analog pins).
Then I have an encoder2. Rotary encoder 200 p/r ( digital pins). that will measure the cable that is coming Out from the cable box.
For all that I ordered the Arduino UNO USB Microcontroller, and the 4.Video Experimenter that I was told can lay details on a video signal.
When it will work then I will add more sensors to the system.
The only problem that I made was to by it all from a company that doesn't have a support.
They know only to sell the parts.
This is the first time in my life that I am working with all this controllers.
Best for you all mt friends....
Rafi Levent
Robocams@gmail.com