If you look at the first example you will notice a line of letters and symbols above the staff (Ebm, Bb7 etc.) These are chord symbols which indicate the harmony to be played by accompanying instruments such as keyboard or guitar.
The big numbers 1 and 3 tell you to play the note. The small numbers 2 and 4 tell you to sustain it until the next note. Notice that there are four beats in each bar.
This symbol is called a half rest. It indicates two beats of silence. To play this rest, count for two beats without blowing.
Small counting numbers are used under rests.
This example uses half notes along with half rests.
This music note is called a quarter note. It lasts for one beat. There are four quarter notes in one bar of *time.
This example contains both quarter notes and half notes. Make sure you tongue each note.
This symbol is a quarter rest. It indicates one beat of silence. Do not play any note. Remember that small counting numbers are placed under rests.
Remember to count mentally to keep time regardless of whether you are playing a note or a rest.