If you don't have a lot of rocks, you can sometimes get away with driving metal chainlink poles with a sledgehammer (you might have to cut off the top inch or two later to get a dome cap on to keep out bees). Then use brackets or tension bands to bolt pre-made wooden panels to the posts.
Another option would be to just use chainlink, if you find some used you can stitch lengths of fabric together by "corkscrewing" one of the fabric wires through both ends. If you don't need the fancy look of the top rail, you can run a length of the same wire they usually use at the base along the top, and use more of the wrap ties or hog rings to mount the fabric to the wire, and also to attach the wire to the line posts (don't try to wrap it around the posts). It can go very fast, I've easily done 250' in a weekend (I concreted the end posts with quick setting and wanted them to set some before I stretched the fabric). Just make sure you use double posts and angle or H-brace them together at the ends to resist the fabric tension. Then you can add privacy slats later as time and budget allow, or as you find them used.
There's an auto auction place near me that basically uses r-panel (metal barn siding) for their fence.