Hi i am a college student who wants to get into DIY audio. I am a extreme newbie, and i've looked on other scematics for amp designs and i have no idea on how to interpret them. I want to learn how to get started. What is the cheapest tube amp and SS amp available that i can start on and practice with. I also what to be able to modify these with more experience later on rather than throwing them away. thanks for the help.