First of all, standard tune your guitar. Make sure that the six strings are in the following order: E A D G B E.
After your guitar is tuned to standard, use your forefinger to play the first fret of the first string. This means that you are playing the F note on the E string.
Use the ring finger to hold down the third fret of the second string. This means that you are playing the C note on the A string.
Use your pinki finger to hold down the third fret of the third string. This means that you are playing the F note on the D string.
The middle finger should be used to hold down the second fret of the fourth string. This means that you are holding down the A note of the G string.
You don’t have to play the fifth and sixth string. You can say that the B and E strings are muted or not played at all while you are trying to play the F major chord.
Now you can start strumming the chord. However, make sure that the last two strings are muted through the index finger or you are not playing them at all by strumming only the first four strings in your guitar.
Some people play this chord but putting a bar on the first fret of the guitar. This means that all the strings will be played with the help of your index finger. After that you can use the same finger pattern which has been mentioned above. However, this becomes difficult for amateur guitar players. The first fret is hard to hold down on acoustic guitars with a high action. Therefore, try to use the method which has been mentioned above.