@akramSalman,
Great thread you have started. My only advice do not give up on this new hobby. You can learn to fly by watching Youtube videos. Take off and Landing are the tricky part. Here are some few tips.
Before take off.
Perform preflight checks.
1) find out the CG (Center of Gravity) of you airplane. Most manufacturers have that information available in the including instructions manual. In general it can be found by holding the airplane on the finger tips, under the Front wings, couple of inches away from the fuselage. If the airplane is leveled or tips slights downward from the front then it is balanced and ready to fly. If the airplane is tail heavy DO NOT fly it yet, adjust the CG, by moving the battery forward or adding some light weights at front.
2) check all servos function, aelerons, elevators, Propeller test.
For take off.
1) For beginners it is a good idea to hand launch the airplane, Just hold it facing the wind.
2) Wind speed should be ideally around 7 - 8 Mph, strong winds above 20 Mph, are Not ideal for flying small R/C airplane.
3) To hand launch, turn stick all the way to Full Speed (Full Throttle), and apply small amount on Up Elevators, the Airplane should lift off, let the airplane rise to a reasonable cruising height, normally 50 to 60 feet up and ease up on the up elevator and slow down from Full Speed to comfortable cruising speed, usually middle throttle, now just use the Rudder to control the turning of the airplane.
To Land.
1) For beginners, it is better to land on grassy area. Do not be afraid of crash landing in the first few flights, it is part of learning process, the impact and damage would be minimal at the grassy landing area. This is when you find the repair kit handy, after your first few hard landings. Do not give up, you will learn to understand your airplane better after you have gone thru these experiencing and learning to make repairs, which is part of R/C flying.
2) Slowly Ease up on Throttle stick, to low level. If airplane needs to be brought down from a height to landing height use the down elevators to quickly lower the altitude.
3) Once altitude is within 10 to 20 feet, keep slowing the airplane down and use the throttle speed and not the Elevator to bring the airplane closer to land gently. Be ready to pull up if you are landing too fast.
Have fun.