end user looking to expand his knowledge base

hi

I am experienced with linux as an end user on the desktop and laptop platforms.

I want to explore linux more thoroughly because with in 6 months I want to use it as my primary OS.

I also have an idea for a business project that could very well use linux in an embedded form which brings me to my next question

Where would I place the post posing such a question so that it gets into the right hands and minds to possibly help me

I just want to make sure I do not post in the wrong area

My idea is involving an embedded OS device to monitor web traffic from a DSL or cable jack in a home

Something like a hacked router or switch might work for R and D

let me know what you think

I shall check back frequently

thanks