Trading is pretty simple. You've just got to know where to look. Make
www.eve-central.com your friend. Using the trade finder and making sure the trade route is still alive by using their market export app will see you making millions in a matter of hours.
Go buy your races industrial ship, fit it out as many Expanded Cargohold 1s as you can. If you want even more space, fill your inventory with Giant Secure Containers. The giant containers take up 3,000m3 of space, but can hold 3,900m3 space.
My best so far was a trade route i completed in 20 minutes. Made a profit of approx 20 million.