are you looking for jeep ideas to copy or instructions on using your bender? pirate4x4.com has both.
if you are looking for materials, search google for onesteel and navigate their tech section. you should find out specs on various types of tube and pipe available. i found this in my favourites -
http://www.tubemakers.com.au/massbook.asp - it might be useful. i haven't looked at it for yonks but i must've bookmarked it for some reason.
my recommendation is to go to your local steel supplier and pick up the small pipe sections that they have in their scrap bin. get lots, go home and bend them up. find out how to bend to get good results. i use spray-on motorcycle chain oil on the dies before bending. i find that i get a nicer inner bend without scratches, and it's easier to get the die off afterwards. make sure you use a tight fitting die. they will open up over time though. place your bender horizontally on the ground for stability. i place the pipe so that the seam is on the side, not the inside or the outside of the bend. this causes the least deformity.
useful additional tools: bevel gauge to get the angle of the bend, protractor to measure the angle of the bevel gauge, spirit level to align pipe for subsequent bends, chalk/pencil or permanent marker to mark the pipe, wood to support the pipe, mallet to hammer the die off the pipe, spray on lube for the dies.