Hi, new here. I've been playing DB for about a year and three months now. I've taken lessons for a year of that time, and my teacher had actually had me use Suzuki books. I worked from there and my teacher and school music directors were surprised by the progress I was making and were thoroughly impressed. However, I've been reading through various topics on this magnificent forum and I've come to realize that although my teacher did teach me well, I feel that I could've progressed even more with better instruction books. Simandl is a name I hear often, and I know the standard fingering 1-2-4 method originates from him. My question is, what instruction/method books should I look into buying that aren't too pricey? I checked out the New Methods for Double Bass by Simandl on Amazon, and it was about $22, which is fine with me. Though I'm nowhere near the ability to play it well, I'm intrigued by Bottesini books as well. I'd honestly would rather go to a music shop and buy them, but I don't know what music shops in Chicago sell these sorts of books. Any help would be greatly appreciated! Thank you.