Stained glass has a way about it - glass tends to break along certain plains. Hand cutting curves is generally difficult. Certain cutter styles work for different folks. you should always keep an ample amount of oil in your glass cutter to ensure it works properly. Etc.
As for the making of pieces with this art, it's not really hard. You choose your pattern or design, then glass that suits it or the "look" you're going for. You cut your pieces in the shapes - as close as you can depending on the exact shape of your individual pieces, then grind them down to smooth out the edges. You select a tape size and color that is appropriate for your piece and tape the individual pieces. You put it all together and get solder happy (well not overly so, but you know). Granted I'm not taking you by the hand with the steps but that's pretty much it.
Stained glass is an art that once you understand the concept it really is practiced skill. As you begin to "know" the nature of the work and how it's done you can create beautiful pieces relatively simply and with little or no outside skill. However, as with most things you must practice.
Years upon years ago I took some introductory instruction, but hadn't touched it for awhile. After while I came back to it and worked on it doing three pieces in rather quick succession (a trained eye can quickly see the progression of quality of the art from the first piece to the last one). Now again I have the time and area to work with this beautiful art again and I fully plan on doing so. I'll be slowly but surely chronicling my efforts here for those to see. As with anything posted here, some of this will be sold and some may not. If you find something you really like or think of something you're interested in seeing let me know and we can go from there!