Not the easiest job in the world. Frustrating!!
I use a bender like in the link. Probably available at Home Depot. In the plumbing tools section. Easy to use.
http://www.bikudo.com/product_search...ct_368_90.html
Your local auto parts store should have some pre-built tubing lines in various sizes and lengths. Pic up some and practise your bends. Use some coat hanger wire to make a template and transfer it to the tubing. You'll screw up a few times. Everybody does.
If you're flaring practise on that tubing. It's not stainless. Easier to learn on. Stainless is very hard to flare. JMHO. You need to get the right grade. Softer type. Sorry I don't recall the rating. Get a good flaring tool. Don't cheap out. Quality costs. Mine was 100 bucks. Here's an example.
http://www.ntxtools.com/network-tool.../OTC-6504.html
Get a small tubing cutter too. Home depot has them too. Here's a small one. Works in tight areas.
http://www.homedepot.com/buy/plumbin...ter-41599.html
When you make your flare connections don't use any sealant on the threads. The seal is made by the flare. If you have a leaker at a connection then lap it. By that I mean tighten it, loosen it, tighten it, loosen it a few times so the flare cuts it's own seat.
Have fun!!