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1. The easiest way I've found to make a chain/tread system is to make one link of the chain, then copy it lots and lots of times until you have a long, straight chain. Then make a spline that goes where you want your chain to go. Apply a PathDeform modifier to the chain (all of the links selected at once) and pick the spline as your path. Then, when you change the percent value, they'll move around the sprocket. There will be some stretching, but it likely won't be noticeable if your links are small enough.
It takes some trial and error to get the right amount of links, though, so keep trying!
2. What MAX is asking you to do is to apply a UVW Map. This tells the program how to put a texture map on an object that isn't default (like a box or a sphere). Quite simply, you must go to the modifiers section and apply a UVW Map modifier, then pick how you want the texture to be applied. You can also specify the size of the texture by resizing the Gizmo that is automatically created as a sub-object or changing the "tiling" section.
3. I don't know of any ways to make that happen, unless you rendered a section of it flying past, and then looped it, compositing in your robot later. However, if your team isn't yet experienced enough to make textures, I wouldn't count on compositing. Your best bet is just to copy the section of road. Sorry.
4. This can be done, and it looks good when used well, but it will probably wreak havoc with your render times. Select your light (spotlight, I assume) and in the properties on the right side, go all the way down until you find "Atmospheres and Effects" Click add, and select "Volume Light" You should have a light cone. You can edit the properties (you'll probably want to change its density) by selecting the "volume light" effect you just added and clicking "Setup" right below it.
5. This is slightly tricky, but it's possible. Open your Material/Map Browser, and open the material you want to change. Go to its diffuse map properties (likely the concrete you wanted to change) and head down to the rollout called "Output." You should see a graph with a diagonal line going up. It's grayed out, though, so you'll have to click "Enable color map." Then click "RGB" to select it as a color output. The little yellow asterisk-looking button is "Add point." You'll want to add a point to that line right about in the middle. Then, using the "move point" tool, you'll notice that the texture becomes brighter or darker. That's because you're moving all three channels, Red, Green, and Blue. You can choose to move just one or two of those. It takes trial and error, but in regard to your specific problem, the best way I could find to make grey turn yellow would be to drop your point on the blue line almost all the way down and to the right, leave the green line alone, and raise the red point straight up just a little.
I hope I could help.
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