a) how can i know updated weather during flights? temp, knots, cloudy? etc..
VFR: Tune in the nearest airport on the radio and listen to ATIS. Or take a look at the map, which displays some information about the weather.
IFR: You can tune in ATIS as soon as you got radio contact with the tower at your destination airport.
b) how can i land using ILS?? (Please explain it details)
Browse the FSX subforum here, there's got to be a thread about that a few topics (pages) down.
c) What is the average or suitable for airplanes to climb attitude while travelling?? b747-b777-b737-airbus etc..
I think 2000ft/min does the job quite well.
d) What is the normal/usual speed they use to travelling?
~Mach 0.75-0.8
e) When all the light will be used?, Strobe, Nav, Panel, Beacon, taxi...
Pre-startup: Beacon.
Taxiing: Taxi lights, nav lights.
Final checks/hold short: Landing lights, strobes.
Altitude 10000ft: Landing lights off.
Approach into destination airport: Landing lights on.
Leaving the runway: Landing lights off, taxi lights on, strobes off.
Use the panel lights when you need them.
f) How can i know which runaway i have to land?? i cant see which number?? ( i know its on the runaway but from far?)
Take a look into the topic about ILS I mentioned.
g) How do i know local time A (depart) and to arrival local time B (arrival)
Your nav log displays your flight plan along with the estimated flight time. Add about 30 to 40 minutes for startup, taxiing, waiting, taxiing and shutdown.
h) What is the smoke come out from the engine use for??
At high altitudes: Freezing condensation from the engines.
On the ground: Remaints of jet fuel in the combustion chambers(?).