The most common way to do it is to use an online photo hosting site. Some examples are Photobucket, Picasa, and Flickr. I'm sure there's many others out there. Once you have an account and you have uploaded some pictures to the account, you'll want to copy the picture's link. Next, you click the little picture Icon right next to the Link Icon in your post tools above. Paste the link an click OK. It will appear in your post. You might want to preview your post to make sure the pictures are in there right.
My truck: 1986 Ford F-350 Cab&Chassis, IH 6.9L diesel V8, BW T-19 4 speed with granny gear, 2wd, 9ft Knaphiede westerner flatbed.
My tractor: Craftsman LT1000,
17HP Briggs Now a 20HP Briggs Apposed Twin, 6 speed Dana Trans-axle pulley swapped to 15MPH, golf cart front suspension and tires, ATV tires on the back, Rear ATV rack, front brush guard.
"An unconfirmed piece of junk in someones eyes can always be turned into a confirmed piece of art in your eyes."