making a system

[NomadRevenge]

i'm back again wondering about how to make systems. i just got round to trying to make a system again, but couldn't get the hang of it. i found a 'tutorial' but it didn't help much as it basicly said: copy this, paste it here, turn on the mod and enjoy this system. i have yet to find someone or something that tells you how to do it and what things mean so i'm wondering, does anyone know of a good tutorial for making systems, or someone who is willing to make one?