There are easier things to use than wordpress if you are not website savvy and there are many websites out there that allow you to drag/drop build a portfolio search for free portfolio websites for writers - or have a look at the hub I did called 101 free tools every freelance writer/web designer needs. In time, once you get a nice amount of clips you may want to consider having someone build you a custom portfolio
As far as querying every magazine and publication is going to have their own specifications and directions. The worst thing you can do is pitch to a magazine without any idea what their guidelines for querying are. Look into any publication you want to work with and follow their rules exactly. You can also invest in something like the writers market guide (highly recommended) which will help you easily locate writer's guidelines and other pertinent information about pretty much any publication imaginable.
Start small - go for small magazines or local pieces to build clips and then build up from there. For writers it's often more about experience and what's in your portfolio than your educational background.