Err...Ummm right this is quite hard to explain
get your right hand, wrap you finger around the arch on its side
now put the next 3 fingers on the valves and you thumb wrapped around the 1st valv

Now, just rest your other hand wherever comfortable. Most people put their 2nd longest finger through the ring and just
rest the other fingers wherever. It varies from player to player!
If you can hold the trumpet this is the place to be now.
Hold the trumpet like normal and put ur mouth to the mouthpiece and try and make a buzzing sound.
If your do it right, you will most likely make the sound of a middle C though maybe a G, i advise practising this until you can play a clean C or G
Hint: C is the lowest open (no valves) note.
after you know you can play a C and press down valves 1 & 3 you are now playing a D, practise this until it is clean like the C & G
now play a G, hold down the 1st valve and blow marginally lighter than a G, you are now playing a F
now try and blow somewere in between a C & G and hold down valves 1 & 2
if you are lucky you can play an E now you can play C,D,E,F & G this will sound on a piano like playing
Bb, C,D Eb & F!
Note pitch is changed by either tightening of the lips (so they are closer together) or blowing more air through the trumpet. Obviously to get anywhere with the trumpet, you have to do both to be able to control your playing.
now you can play C,D,E,F&G clearly now its time to play harder notes. try playing A, just press down on the 1st and 2nd valves and blow a little harder than playing the G if you get a clear note you are playing A
now lets try and play B. Blow a bit harder than the A and press down on the 2nd valve if you can play this clearly its a B
now blow quite hard and dont press down on any valves if you are not playing a G you are playing upper C
now you can play these try playing some very easy pieces!
If your need to play higher or lower or play sharps and flats refer to the 2 valve charts
Now you can play the main notes its time to get moving!!
these are the main types of music in Trumpet
Jazz = tends to swing, goes up and down a lot
Blues = The ultimate swing piece. Followed along the BLUES SCALE!!! (v. important)
Classical = Differs in the period. But usually played strictly with the music unlike Jazz and Blues
Rock = usually only played in bands but can be played solo usually played Forte (Loud)
Pop = always very lively and bouncy good piece to play in a beginners concert as sounds good and is easy
Themes = usually give instructions on how to play at the top
for any other music genres go to any good Music site or search on google