Remove Author & Comments mention for Posts

Hello: My URL is http://www.ronmillersworldpublishing.com and this website is still beta, btw. I'm looking to remove the "By Admin" and "Comments Off" text from both the homepage post excerpt and the post header themselves. This is because the posts will always be by me and the comments will always be off. Appreciate any advice if there is custom CSS code that can hide this.