mudiare

I am a total audio newbie (as can be seen from my previous posts) and i want to purchase the above to replace my factory head unit and my front speakers. I am no audiophile so i really do not know what to look for in speakers. I chose the above simply because i have a friend that works in bestbuy that gets almost 40-50 % off the regular retail price. In addition i am looking for a good audio website where i can get good information regarding audio installs as well as the concepts involved in picking out an audio system.Thank you for your help (flame suit on)