For which model of olympus camera do you require an instruction manual ?
For a q uality printed olympus manual try www.oldtimercameras.com-instruction-manuals
First try to download a free olympus manual at http://www.olympusamerica.com/cpg_section/cpg_download_manuals.asp
Many olympus manual can be downloaded free at http://www.kyphoto.com/classics/manuallinksmo.html