It can be difficult at times, but if you are serious about it it will pan out. However, to help gain valuable writing experience on the internet I would recommend checking out the following sites:
textbroker.com (freelance writing site)
londonbrokers.net (freelance writing site)
Triond,com (submit your own work)
Those will help you gain some valuable experience and you can check out examiner.com. Then you will be able to use those articles as published works for your resume.
You can also check out a site called journalismjobs.com (check the spelling on that though). That is a great site for finding journalism jobs.