From the options provided, I can say that all of the above should be done. This is because when applying for a job you are competing with countless other individuals who are most likely just as determined and/or qualified as you are. Therefore, every effort, no matter how tiny, makes a difference in whether or not you get the job. Anything that will get your resume in front of the potential employer such as posting your resume online, applying directly to a few companies you have searched out, follow the company's directions for applying should be done as it shows the potential employer that you are determined and willing to go the extra mile.
