Fantastic! How exciting!!!
First watch this! It explains all the doodads and thingamabobs and how to sup them together. Stuff you may already know but it's a great video.
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Then here's a few places where you can buy the gear from:
Stands
Umbrella Clamp/Swivel
Brollies
cold shoe adaptor
It would be nice to buy it all from one place but chances are slim.
Cheap triggers if you need them, would be cactus v2s's, run a search on ebay, loads of sellers have them. They are fairly hit and miss though mate.
If you want 1000% reliability from a trigger then either Pocket Wizards, Elinchrom Skyports or Bowens Pulsars are the best bet.
I used cactus triggers for a while but after chancing them on a commission (stray radio waves can set them off) I havent used them.
I found a good deal on some wizards and they have never, ever let me down, two AA's last about 60 hours in one wizard.
Any questions I'd be happy to help Pete