@banno2000: Go to Dashboard=> Appearance=> Customize=> Additional CSS box and add the following CSS:
/* Hide author and date on the top */
#main .entry-header .entry-meta {
display: none;
}
And for disabling comments, go to edit post, click on Screen Options on the top right just beside Help. Some options will slide down. Check on Discussion checkbox. Then scroll down below the content and uncheck Allow Comments checkbox then click Update.
Please repeat the process of unchecking Allow Comments checkbox for the posts. Hope this helps.
Regards,
Mahesh