Remove admin login,

I am new to WP and I still cannot figure out what php sheet contains the admin edit, log out info(showing in the middle of my page) and rss logo are located so that I can remove them. Anyone know what pages these are on and what I need to remove so I do not get any errors?

Also when I added my text I now get a box around some of the text. I tired removing them, but everything I try gives me an error. Any suggestions on what is the best way to remove these?

Also how do I get the title of the web page not to appear as a header on the page content?

thanks