Need a few UI tweaks

I just need a few tweaks and a few questions answered.

I was able to remove the font size and print on the listing view, but I can't seem to remove the font size and print icons at the top of a blog article:
https://jeffkershner.com/blog/template-for-news

At the bottom of the blog article (not on the side bar), I want to remove the "Recent posts."


On to the side bar...
How can I make my sidebar (aside) look better. I don't believe they are using my Rockettheme styles so I can't use those styles. Right now it looks like a mess.

https://jeffkershner.com/blog/

Finally: I am brand new to blogging. What are your recommendations for a commenting system? I don't have to integrate with anything in particular but I would like the easiest way for my visitors to leave comments and not require them to have to log in. Should I use Disqus, facebook comments or your built in commenting system?

Thanks!