Newbie to Nitrous

I just purchased a Nitrous express kit for my 99 cobra. Can anyone tell me . Or give me a lesson on using nitrous. And should I upgrade my fuel pump to svt focus pump I will have the car dyno tuned. What about when should nitrous be used? In what gear or rpm to use or not use. I just really would like someone who is very experienced in this category.

Thanks

My mods on motor are
bbk undrive pulleys
Meziere electric water pump
373 gear
JLT CAI
NGK spark plugs irrodium
diablo chip dyno tuned
Nitrous express kit
MM wheel hop kit
delrin bushing front and rear
Tri axe shifter
BBK throttle body
Sct MAF
bassani equal length header ceramic coated
bassani x pipe no cats
magnaflow cat back
saleen body kit and wheels
Pirelli Pzero Rosso tires 255/35/18 and 265/35/18
steeda camber caster plates
tokico adjustible shocks
Eibach pro kit springs
EIbach sway bar kit and links