btc

Hello all. I have never used a cryptocurrency before and want to understand how to perform a reasonably anonymous transfer. After reading a number of posts on this forum I have a proposed method and a few questions, if you would be so kind as to help me understand where my understanding is...

i just realized that i sold some BTC last year and was supposed to claim it on my federal tax return. Well... i didn't. How was i supposed to know? i figured i'd be sent a tax form from the exchange. i have to claim naivety on this one. i feel i shouldn't be held accountable. LOL No, really...