So im an average guitarist and i've got many things down.
Except for one thing.

I have no idea at all how to write music.
Im into much classic rock(GnR,Led Zeppelin).

Can you just give me the basics on song writing?

step one: learn some theory. understand how music works. searchbar for the music theory FAQ.
step two: u will know enough of how music works to where u dont need to ask this question anymore.
In speed versus emotional playing, i think of an M16 versus an M24. You can have 650 rounds per minute, or one round, one kill. Both should be in your arsenal.

Leave a message that you're from UG with your username
^^ Basically what he said.

Also, this belongs in the "techniques" section. *reported*
Today I feel electric grey
I hope tomorrow, neon black