Welcome wyliang312. I haven't built a wind-gen yet, but...
I feel the two biggest questions are, what kind of wind do you have at your site (as previously stated) and also what are you going to do with the power you get?
In order to use off-the-shelf components (such as charge controllers and inverters) most use a common system voltage of either 12-volts, 24V, or 48V. They charge a battery pack, and use an inverter to convert it to the 120VAC that TV's and other appliances use.
I can feel the frustration of an enthusiast who checks the internet for the average wind speed and frequency in their region, then builds a wind-gen to that spec. After raising it he may find that the wind on his particular site is actually much poorer.
You may have many trees, you may be inbetween hills, you may only be allowed to have a short pole by local ordinances and wind is much better the higher you mount it.
Find out how high a pole you can have, and then mount an anemometer up there to begin data-logging. Buying strong magnets to get the best power output is expensive, and a custom PMA is time-consuming and involved (only to find you have to re-do it!).
The benefit of building a custom PMA is that the resulting wind-gen will extract the best possible amount of power from your wind. I think converting a garbogen or ECM motor into a generator looks like a good starter project (Use "Google search the board" and save links you like in a file)
http://www.fieldlines.com/story/2005/4/13/33217/7314
"...Hi ghurd, These PVC blades are perfect for the GE ECM motor. I'm flying 4 GE ECM motor conversions with this blade its a real good match.
I see around 250 watts out of the ECM at 30 mph. Seeing over 100 watts at 15 mph.
This is the the 1-hp unit with my coil reassignments. Also have 36 5amp diodes on this conversion. This conversion was covered in a post a while back.
Not bad for a motor pulled out of a dumpster and a hand full of 25 cent diodes, 3 $15 blades and the rest made from junk..."