Couple Questions

1) I created custom field called IMGBeforeContent which print images before post (title). But not every post have a picture so i see picture not found error. As i understand it must be some kind of check. If post from category news have custom field IMGBeforeContent which is empty then WP will not print this custom field. Hope you understand what i mean *_*

2) I’m using query to print 1 post with custom field BIGPicture from category “Tutorials”. But at the same page index.php i need to post the rest of the topics from the same category. So in this situation i have a duplicate posts. How can i prevent that?