big white tank is winshield washer fluid with a plastic cap on top of it. Small brown tank (clear but stained) is the radiator fluid (antifreeze) there should be a cap with a number engraved on it on top of it.
Shaking speedometer sometimes means that your missing some teeth on the cable cog, mine has been doing it for awhile now.
<P> is the parking light, I believe this option changes depending on country.
You can order the CD for this car here at the partshop page or get a Haynes manual which isn't as detailed.
Welcome to the Shop by the way!