A basic good and bad example of alignment..
With alignment, nothing should be placed on the page pre-maturely. Every item should have a visual connection with something else on the page. Everything should look like it belongs there, and not rushed.
In my good example, I used a bold font on top, the reason being is that’s where I want my viewers to start, I also have a sub text at a slightly smaller font size. I used a left align on the op, makes it flow nicely with the design. And at the bottom of the page I used a right align. Notice I used a different font and size for the article. Now that is just dummy text, so don;t look to much into it :). Sometimes in design, it is ok to use two different alignments, as long as it flows with the design, and not just randomly placed.
In my bad example, you can still tell where to start your reading, but everything is aligned all funky. I am using a center align where it makes no sense to use it. Generally you should stay away from center alignment. At the bottom of the page, I have 3 different alignments going on, NOT COOL. Never do that. If you look at my design, you can see it just doesn’t flow well on my bad example, and that is because the use of alignment is out of WACK