#1
I've been playing the guitar for 6 months and I've come to really enjoy playing. I'm really dedicated in my guitar-playing and i was wondering what key things i should know about playing better. I really need tips on how to tune the guitar by ear :P for example.

i need to become moar gud lolz srsly.
#2
buy a tuner or tune after the A note on a piano, thats what i do..

well in order to improve your skills you just have to want it bad enough.. it's practice! and lots of it
#3
tuning the guitar by ear will come as you play the guitar more, you could try practising tremelo picking, legato these things will help you become a better guitarist/musician
#5
Just keep practicing. My friend is amazing at guitar and she is self-taught, and her advice is just practice all the time and experiment with different styles and sounds when you feel comfortable with the basics.
#6
Basic theory and an understanding of the major scales will help you lots as well.
#7
Practice, practice, and practice more. When you think you've practiced enough for the day, keep practicing. Practice even more. Only when you CAN'T play anymore, than practice a bit more, and so on ...

It's all about practicing enough and effectively.
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