See, practicing scales and chords are good, but its honestly the most boring part of learning to play the guitar. I strongly agree with what ashy said, but a more interesting way of honning ure skills would be to learn songs or interesting riffs using a certain scale or a combination of chords. Once u can figure out how that fits try experimenting with scales all over the fret board. A good example of this would be learning solo's. it doesn't matter in the begining how fast or how well u can play them but u'll definitly see a connection between each note and the next. And then just learn to play it right, speed will come, things will sound much better. And learn songs that have the technique ure planning on becomign good with, like songs with sweeps or tapping, learn that one phrase and practice till ure arm falls off.

keep at it.