A problem with many DVD lessons and On-Line instructors is talking too much about gear and SOUND. Beginning and even progressing guitarists really should be concentrating on: Learning and Improving and LEARNING.
But, we all get and feel a little limited and do want SOMETHING to PUSH our tone. A really SIMPLE and fairly inexpensive fix is:
An EQ pedal
If there is a FIRST pedal to buy, this is is. Maybe a compressor after that. Concentrate on creating a vibrant and exciting CLEAN tone. An EQ pedal, like a Bheringer, can be bought brand new for about $25, is a dead ringer for the BOSS EQ and acts as a CEAN PUSH between your guitar and amp. There are all kinds of pdfs and vids out there on settings and how to use one, but start with a "mid Bell hump" to create a fuller guitar tone and work from there.
This WILL "screw up" all of your other pedal and amp settings, but in a good way.
As a beginner and as you are learning, you should be only working with CLEAN tones for a while and not get concerned about driven or distorted tones.