Hello again Dave...
So I guess I understand now that in a trill you use only the
left hand and in tapping you use both hands.Up to now,as both of these teckniques are the same thing and produce the same sound(I am not refering in pitch),I thought that they are one and the same.Well now I know the difference and I thank you very much for that!!...
About bending,I know there are half and full bendings.Up to now I find difficulties in doing a whole bend,especially on the acoustic(for a couple of times after doing a whole bend that string would get out of tone

).I am stiil learning the whole bend and getting back to the note that I started(hitting any note on a fret,doing a whole bend and coming back to that note)and then going on from there to continue a solo or a melody.I guess that I don't have the experience yet,but I don't mind.Someday I will get that one right...
So for another time thank you very much for the lessons and your reply,I really appreciate it!Be always well!!
All the best,
Theo