I'd reccomend these plugs, perfectly useable and cheap or you.

http://cgi.ebay.co.uk/RS-Cosworth-YB...item27b38aba36

Oil i'd reccomend Millers 10W/60

Power steering fluid, dunno, just something decent should do the trick, same as coolant, long as you have the right concentration.

When looking under the car pay particular attention to the boot, rear chassis rails and front jacking point area under the car near the footwells.