Hey SAEED
The vids should see you fine but if you want a few quick tips I would suggest the following as a starting point...
Start off with just trying to bend the 3rd (G) string (hee hee - I said G String
) as it will be easier to control being in the middle of the neck
Aim to bend the string so that increases in pitch by a tone (ie 2 frets)
I would then move on to trying to bend the 2nd (B) string by a tone (ie 2 frets)
To start with aim for a clean bend WITHOUT vibrato - this will help develop your accuracy when trying to hit the note 2 frets above (which you can check by playing that note before and after)
Practice the bends on different positions up and down the neck to get a feel for the different tensions - ie it is more difficult to bend near the nut and easier further up the neck
To make it a little more practical lets look at the most common string bends
Lets assume we are using the good ole C Minor Pentatonic scale
C minor Pentatonic Scale
e|-------------------------------------8--11--|
B|------------------------------8--11---------|
G|-----------------------8--10----------------|
D|----------------8--10-----------------------|
A|---------8--10------------------------------|
E|--8--11-------------------------------------|
IMHO the most useful string bends to incorporate into your playing style will be:
- Bending at the 10th fret on the G String - so that it sounds like you are playing the 12th fret
In this case you are bending the 4th degree of the scale (F) up to the 5th note in the scale (G), which gives a satisfying "resolution"
- Bending at the 11th fret on the B string - so that it sounds like you are playing the 13th fret
In this case you are bending the b7 (Bb) up to the root note (C), which also gives a sense of resolution/release
I would suggest learning the intro to "Black Magic Woman" as a masterclass of Santana using string bends
This all sounds very wordy but it should make sense when you grab your guitar and I think you will instantly recognise the sound of the bends
Good luck!