Yes, the home made stuff is really restricted to flies, leaders etc, and rods to a degree.
Depending on where and for what you intend to fish for dictates the set up you will need. The fly line is matched to the rod. For example, my bass fly rod is a 7 wt and I use both a floating fly line and a sink tip floating line with it, depending on the presentation/type of fly I am using. The lines ar also rated. 7 wt. Fly lines should always complement the power of the fly rod. To get a better understanding of this Rating (Known as the AFTM)...dona web search on AFTM flyline rating and all will be revealed. Don't get to bogged down with it....I don't...keep it simple, get a line or two that matches the power of your rod...and enjoy!
It's a pretty involved subject and I would suggest you use the web to get to speed
Here is a couple of links to start with:
Learn the Basics of Fly Fishing
Fly Lines : A Buyers Guide to Explaining Fly Lines
Again, depending what you intend fishing for will dictate the lines you need. For most application a floating line and a sinking tip or Intermediate line should suffice. As to whether they are Weight Forward or Double Taper lines is a whole new subject.
Enjoy!!