Links to tutorials for those just getting into electronics. I've put them in order to make tracking them down a little easier. If cost is important to you I suggest buying on Ebay. Most comes from China so it might take 10 to 14 days before you receive your shipment but you'll be surprised how many great components, tools, breadboards, etc. you can get for very little cost. Go to the Business and Industrial category. Then look for the link to Electrical & Test Equipment. Then you'll see the link to Electronic Components.