If you want something to get you started, there are some great reviews of the Naturevape coils, which are like protank heads (and will fit your aerotank). They are basically a microcoil and cotton build of a protank head. While some people can do this themselves, I don't find that my fingers work well enough to do anything quite that small.
They are by no means the cheapest option, but might be worth a try if you don't feel like jumping straight into full on rebuildables. Some very experienced vapers with some very high end kit have been very impressed with them. I plan to order one or two come payday.
Just an alternative for you.