Hi Chris,
Having the right tools is an important part of the PE "bending job," but also understanding the right way to do certain tasks as well is essential to good results.
Also, knowing how the parts should be formed will let you figure out "expedient" tools and techniques that will yield similar results. A lot of what we do with specialized bending tools, was simply done using expedient tools - old school - back when PE was first offered commercially as AM.
Here are a couple of illustrations on the usual correct manner for bending parts that have etched bending lines.



If you want to read all of the notes that go with those, you can find them here:
AMPS Central SC::PE Demo Notes (NOTE: Sometimes the person who drafts the PE artwork doesn't follow the "standard" geometry, but usually this is the correct way.)
If you're looking for some information on "old school" PE bending (using expedient tools and methods), this special edition of our club newsletter covered a detailed "how-to" on making working PE German WWII tool clamps. Although you might not be at a point where you want to tackle those, the article show BOTH bending with a special PE bending tool AND making the EXACT SAME BENDS using expedient methods. The point was that specialized PE bending tools are not always necessary and many, if not most, simple PE forming can be dome with what you normally have on the workbench.
AMPS "Wildcat" Special Edition::PE Tool Clamps We also have some other information on using PE on our club's website's "Group Builds & Demos" page, especially under the "Build No. 2" list (a club build that used a full AM PE up-grade set for the DML Steel Wheel Panter G).
AMPS Central SC::Group Builds & Demos Page PE is nothing to be intimidated by. Sure, there are a few "tricks" you need to learn, but once you "crack the code," the extra detail possible is well worth the effort to learn. Most of the techniques needed are pretty simple and with some practice, they can be done quickly and easily.
HTH,