Establish the correct sitting position. If you are right-handed, you will be using your left hand to fret the strings and your right hand to strum. The guitar should be balanced on the thigh of your left leg and should rest lightly against your body. Do not hunch over the instrument.
Use a foot stool to elevate your left leg so that your left hand can easily access the entire fretboard.
Develop an effective left-hand grip. Your thumb should rest in the middle of the back of the guitar's neck. This enables you to apply sufficient pressure to the strings while allowing for hand mobility
Learn the walking finger technique. Begin by playing the top E string, which is the one nearest to your leg when you're holding the guitar. Pluck the string, alternating between your first finger and second finger so that your fingers look like they are walking. Aim to gently brush the string, rather than pulling it. Once you're comfortable with this technique, move on to the other strings. You'll notice that it becomes trickier when you move away from the top E, as there are now strings each side of your plucking finger.
Practice right-hand thumb and finger coordination. In Spanish-style guitar playing, the distinctive raking sound is made by striking a low string with the thumb and then striking subsequent strings in ascending order of pitch with the index, second and third finger in succession. This is a very important basic technique. Practice it without fretting.
Deveop your fretting technique, starting on the top E string. Position your hand so that your first finger is in the first fret position, applying pressure to the string in the space between the nut and the first fret. As you apply your first finger, your second finger will naturally rest near to the second fret; strike the string and listen out for any buzz. If there is a buzz, you're not applying enough pressure to the fretboard.
Remove the first finger and apply the second finger, then strike the string again. Repeat this process using each finger in succession, remembering to remove the previous finger. Once you're comfortable going from first finger all the way to your pinky, reverse the process. As soon as you're happy with your technique, apply it to the other strings.