As a friendly reminder: What the FMC want to know is this (chronologic order, corresponding FMC buttons in bracketts)
- Current position (MENU/FMC/POS REF)
- Route, origin and destination airport (RTE)
-Take off runway and the SID (DEP ARR)
- Routing; waypoints enroute (RTE or LEGS)
- TOGW, ZFW, Fuel, fuel reserves, cruise altitude etc (MENU/FMC/PERF INIT)
- Thrust derate (N1 limit)
- Takeoff performance; Flaps, v-speeds, cg and trim (MENU/FMC/TAKE OFF)
Now this is done step by step so when you have executed one step, you'll automaticly be presented with an option to jump directly to the next step by clicking LSK 6R (Line select key 6 right), but I posted their complete path if you get lost on the way

But I agree with the poster abovem read AVSIMs tute...it's a good one.