Palm mute. Start here. Probably the most important part.
Bending is great! Bending multiple notes is greater.
E minor. This is your base camp. When all else fails return here. Combine with palm mute.
B flat. El diablo. E minors best friend.
Artificial harmonics. Have your thumb and index finger practise together on this.
Natural harmonics without depressing the string.
Be sure to use big tremolo on higher notes!