Help with wordpress

I have no idea what version of wordpress I am using, sorry.
My situation.

I paid a web designer in full and up front to create a VERY basic template for me, mirroring one I am using on my business listing. Two and a half weeks after she was paid, numerous excuses, and so many missed appointments with me that I can’t count them anymore she took about 10 minutes, with me on the phone, slapped up some mess to include WICCAN symbols on my “”life coaching site” and assured me we would get together by the beginning of this week and “tweek” it! That was last Thursday, and my business is suffering.

All I want to do, at the moment, is change the body font to blue, get rid of the wiccan background, and put up the one I sent her to use. Then I will try to find someone to make a header.

FYI I have never seen the “back end” of my wordpress and have no experience as a computer geek. Techy to me is getting all the paper off of a straw so my kids can drink a milkshake. Any help would be very much appreciated. Thank you