Finding the root note F on the guitar.
Knowing where the root or tonic note is located makes it easier to find the chord shape and also play the major, minor, pentatonic or other scales. The F major triad is: F, A and C. The triad may also be inverted as follows: A, C, F and C, F, A.
Regular practice with scales will help improve your improvisation technique. The F Major scale is illustrated below.