This lesson can open for you a secret of high-speed guitar playing. If take the given technique for 2-3 weeks you'll feel progress in high-speed playing of complex passages.
The given principle of development of techniques "was tested" not by one generation of guitarists and not only guitarists...
In this lesson we shall concern high-speed technics. Skilled guitarists alredy know that the basic brake in development of guitar high-speed technics is the right hand. Therefore when playing the most ultra-high-speed passages for simplification guitarists play legato (i.e. the right hand does not take some notes, it is done with fingers of the left hand by receptions pull-off, hammer-on).
How to achieve speed?
For this purpose it is necessary for guitarist to develop technics of the right hand - fast alternation of pick stroke upwards-downwards (a variable stroke). The more quickly the right hand will make alternating strokes, the quicker the playing will be.
It is necessary to begin from the most usual tremolo (fast recurrence of one note).
Triplets are the most effective way of learning to play a tremolo. Try to begin each of your lessons with a tremolo. It develops (and well warms up) the right hand. The tremolo notes must sound dynamically equal (all sounding notes of equal loudness) and with equal tempo.
For example, you wish to learn a high-speed passage. I offer the following simple blues phrase in "A" as an example:
___5_________________8___5_______5______________________
First you need to learn in slow tempo and in convenient key with rational pick strokes.
After you've done it, play a tremolo of each note, i.e.