I just bought a guitar off someone from Craigslist, an ESP LTD and a Crate GFX-15. One of the reasons I went with this setup is the guy told me I could get a good sounding distortion for metal style playing straight through the amp without a pedal and stuff. I've been playing around with the knobs but I have no idea how to get it to sound how I want. Does anyone have some help? I don't know what delay, flange, overdrive etc all mean or how I use them to get the sounds I'm looking for.