The Tool Crib
 
Starting off, I thought I'd introduce the tools that I found I needed most often when working on my fences for my Blackbelly sheep. These helped me to put up the fence on my own, but if you can find extra hands they sure would be nice to have. Aside from just working on the fence, I think that you'll also find that you'll use these tools in other situations along the line, so don't be intimidated by the list of new tools you might need to invest in. You may not see it now, but these tools will be used often for both repairs and other building projects aside from the fence. Most people have at least a few of these on the list, so hopefully you're budget will be smaller than what I've listed below.

As a guy who likes to build stuff I became a woodworker building toys for my kids when they were younger and loved it. What I learned, and now teach to my kids, is that they should ALWAYS buy more tool than they think they might need. I've found over the years (Not that I'm very old) was that buying low-end light-weight stuff NEVER was smart, especially for those tools you might tend to bang around and abuse more often than others or the tools that might need to last you a few years or more -- Marked below with **.
 
You should be able to find nearly all of these at your local hardware store, but if not, try a country store closer to the suburbs where they sell to farmers and ranchers. You also might search for a local feed store and they might help direct you to the best place locally. And as a last resort, start looking for them on-line. This will cost you more because of shipping and you may not get exactly the quality you thought you were paying for.
 
1) Post hole digger**                          $25 - $50
2) Post driver                                     $15 - $25
3) Measuring Tape, 15 ft                      $3 - $10
4) Measuring Tape, +100 ft                 $15 - $25
5) Wire strainer handle**                      $7 - $12
6) Fence Pliers**                               $10 - $15
7) Fence Stretcher, type shown**        $40 - $50
8) Static Tester, for electric fences        $4 - $12
9) Work gloves**                                 $2 - $15
10) Small level                                    $3 - $10
11) Hammer**                                     $5 - $20
12) Bucket                                          $3 - $7

13) Kite String                                     $2 - $3  
Total tool budget                          $135 - $260


Of course there are more fancy power tools that can help you out. If you need something that big, go for it! However, for me, I think that for the small flock I have, simple hard work and dedicated time is better than blowing a few months salary on a contractor to put up a fence in a couple hours; have patience.
 
In the case of a small shepherd, I'll stick with the mind set that simple is sometimes better and these tools are the same as those I've seen the local ranchers use for their trade and love.

And if you can wrangle some help from a neighbor or friend. . .  you should try.