Blogging makes many things possible that were never possible before, one of them being, anyone having the ability to say what they want, to the whole world. In other words, Free Speech. A wide open information highway, not limited like main stream media, and with a cross reference that is unbelievable.
To use this cross reference, one needs a good understanding of keywords, or tags, and how they work in the browser. In other words, how to navigate the internet. Access to the correct spot, is in the browser. The tags group it with the appropriate groups with the same tags. Insert the tags you identify it with, and wham! You get what ever subjects contain that tag. These are some of the barrier's I have run into doing blogs. Just plain and simple computer learning.
One of the greatest things about blogging is finding friends, sharing knowledge, and experiences, and it's even at real time. It connects, or can create a network, which empower's people to express their needs, or support someone else's need. Alot of blogs are someone's take on a certain subject. If this is your blog, be bold and learn to speak up, and let your voice be noticed and heard...Be an individual, YOU. You will learn how to define you. But be very careful to maintain your anonymity. Especially if you blog on controversial subjects. :)
Any barrier's I have, or discover I have, I would learn what to do to overcome them through research. I would use my browser, and tag words to find the information I need. Print that, then follow the instruction's. Such as html, which is simply a set of codes imbedded in the text, telling the program how to display it. I think learning is fun, so, with anything along these lines, I would use research and follow the directions to overcome them. :)