#1
I'm really stumped with this one.

How do you blend riffs with chords?
As in, the lead guitar with the rhythm guitar?

For example:
I have a riff.
How would I blend it with chords from the rhythm guitar to back up the riff and give it a more "fuller" sound?

Thanks
#2
1. Look up songs that do that.
2. Listen and check out the tab if you need to.
3. Apply the different techniques to your stuff.
#3
see what chords go with the notes in your riff.

if your riff contains E-G-B-D

you could play E minor or Em7 because you riff is made up of notes that the Em7 chord contains.

this is obviously a very basic way to do this but you should get a firm grasp of it before you move on to something more complex.
#6
I would check out Crazy Train as a good example. It's very "fill-y", and has lots of single note bits mixed in with the chords, especially during the pre chorus and chorus.