I've used or tried most of what's out there. Here's what I would recommend and why......
The machines are a great way to get a fantastic edge. The problem is that you are admittedly a beginner, and you can do a lot of damage, really quick to your knives with one of these systems both screwing up the edge and generating heat and screwing up the temper in the blade.
Same with some of the clamp/guide type systems, but not quite as quickly. But it's pretty easy to start reprofiling an edge...badly...before you realize it.
I'd say for a beginner, go with a Sharpmaker. While you can reprofile an edge, it takes a fairly significant effort to do it. It's inexpensive, and even when you progress to the point of one of the better/more advanced systems, you won't feel bad about the money you spent on it and will probably end up keeping it for quick touch ups...I did. It will also give you a fairly safe, effective, but easy to use system to start to develop a "feel" for what's happening at the edge of the knife as you sharpen. I personally can get a better working edge with a Sharpmaker than some of the clamp/guide type systems. Keep the blade vertical, move it straight down. Two "secrets" to success with the Sharpmaker, IMHO, is watch the DVD that comes with it, and let the rods do the work. There is a natural tendency to try to push against the rods. Don't. Let them do the work, and use just enough pressure to keep the edge against the rod, and you'll end up with good results.
When you're ready...if you decide you need it...move up to one of the more advanced options of a machine, a Wicked Edge, or an Edge Pro. I use an Edge Pro and love it, but if I only had my Sharpmaker, I'd still have VERY sharp knives.