yea the reason why many say send to a pro to sharpen is cuz it's a learning process. Even alton brown on his knife episode said to send it out to a pro, pro's usually charge per inch, as in they don't charge per knife but by how many combined inches they have to sharpen.
like i've said before if you plan on doing it yourself, you have to at least keep a consistent angle, i go so far as to have an angle measure tool
AccuRemote Digital Electronic Magnetic Angle Gage Level / Protractor / Bevel Gauge - Angle Finder - Amazon.com
imo, there are 2 obstacles to obtaining a good edge.
proper consistent angle
time (as in the time it takes to shave)
proper consistent angle can be had, with a jig of some sort (i linked one earlier) where it keeps the knife in place and has guides sharpening the stone. (i have this system as well, i find it a bit unwieldy)
or you can try to hold your knife super still. usually there are 2 ways to measure freehand knife sharping.
1. hold the knife 90degrees/ perpendicular to the stone. then go half way to 45degrees, then go again half of that and you're at 22 degrees.
2. or take two quarters, lay them on the stone and use that as a guide.
there's also another way, which is to hold the knife perpendicular again, except you swipe up and down (holding your knife 90) against already angled rods, the popular option for this is this
Amazon.com : Spyderco Tri-Angle Sharpmaker Knife Sharpener 204MF : Sports Outdoors
i like this one, but it's getting on the expensive side for some ppl.
there's a cheaper option, that has shorter sticks, and includes a mini diamond stone, but is limited in angles (to a 20 only)
Amazon.com: Smiths CCD4 3 IN 1 Field Sharpening System: Home Improvement
i find this very compact and if i ever go outdoors i'm bringing this with me. (it used to sit out on my kitchen counter for quick touch ups since it was so small, if you get this, whatever you do, do NOT use the carbide "v" cutter, while it can shape a badly damaged knife it will take off tons of steel)
the next obstacle is time, truthfully to sharpen knives by hand (baring a wheel grinder, etc) you need to go up in grits, basically you're using larger particles to sharpen your knives and you should progress down in particle size (this means up in number) or grit.
you'll either see company standards of course/fine/extra fine or in grit sizes 200/800/1000/6000 etc or even micron particle size.
of course this is also affect by the type of sharpeners (stone/oil/water or ceramic or diamond embedded)
i did have one of these
Amazon.com: Furi Rachael Ray Ozitech Diamond Fingers Pro Knife Sharpener: Kitchen Dining
when i didn't know about sharpening and i remember it doing a decent enough job, at least my knives weren't dull, i wouldn't be able to "try it out" again since my previous one was used so much the diamonds wore off, but this is the sharpener i give to friends as a sharpener any idiot can use and will get decent results.
there used to be a knife sheath + sharpener in one that i would give to friends, that way, whenever they put the knife away in the sheath and take it out, it gets sharpened.
lately i've been looking at
Amazon.com: Warthog V-Sharp Classic II Knife Sharpener WHS01: Knife Sharpeners: Kitchen Dining
to give as a knife sharpener to family, when i have time i'll buy one to test out and see how idiot proof it is.