Rhythm is a crucial part of music. Knowing the basic rhythms such as quarter notes, eighth notes, and rests will give you a deeper understanding of the music you hear. So the first thing you need to know is the time signature.
You will find the time signature at the beginning of a piece of sheet music as some kind of fraction or a C. This tells us how many beats there are in a measure and which note value represents one beat. The most common time signature is 4/4, sometimes written as a C.
Whole, Half and Quarter Notes
You should be able to understand the differences between note values Different notes cover different lengths of time, take a look at what each symbol stands for:
So now it's time to put what you've learned into practice. The pic shows an easy exercise: count along 1 2 3 4, but only clap (or play the B string on the guitar) when there's also a note written. For a better learning effect, repeat every measure multiple times without a pause in between (1 2 3 4 1 2 3 4 1 2 3 4…). It is crucial, that you count at a steady pace, so don't get faster or slower during it!