roychambers880

Hi I'm new to wordpress and PHP, I'm not a developer and I only understand HTML. All I've learnt so far about wordpress is from youtube, so apologies in advance for all the questions. In the header where it says "Get Register", i want to change it to just say "Register". I'm using firebug and Firefox browser to find the file, to edit the above request. so far, its told me the text i need to edit, is in custom.css?ver=1 on line 329 I found the file custome.css, but how do i edit custom.css?ver=1 please?