indeed knowledge is the key and learning so much now it is amazing and yes knowing parts names is the big thing for selling i still have a long ways to go but thats the idea building a business learning and making everything count. ebay is the best way for large numbers of people for were i am in a college town it makes it much easier to sell but have no idea yet on full breakdowns but things like tvs,vcrs,and stereos that i would have had very little value on is now 5-10 times that.