how can i be completely annymos

How can i stay invisable on the internet so that not even the fbi can find me. I use tor and use simple browsers like w3m. I use cgi proxys. I dont use my normal email or anything else when i do this that could link me to anything. what else can i do? what should i read about? any links or books i should read?

i always wondered about this.

seems like they know your MAC because changing it gets you a new IP assigned, right?

so couldn't you be tracked across different wireless networks?

like if i'm at starbucks on my laptop downloading donkey porn, and then go to the library to check my email and do PhD research.

wouldn't it be theoretically possible to track same laptop across both networks, given the isp logs?