Q: At the module, I am showing the rss links in a simple list with tooltip and a want the link to open in a new window, PLEASE advise me I what I can do.

A: If you are using tooltip and its desired to open the news in a new page, this will require to edit a joomla file
"libraries\joomla\html\html.php"
around line 265: "$tip = '<span class="editlinktip hasTip" title="'.$title.$tooltip.'" '. $style .'><a href="'. $href .'">'. $text .'</a></span>';"

this has to be replaced with "$tip = '<span class="editlinktip hasTip" title="'.$title.$tooltip.'" '. $style .'><a target="_blank" href="'. $href .'">'. $text .'</a></span>';"

Q: How can i setup the module so all categories should be minimized by default?

A: Edit file:

components\com_rssfactory_pro\views\_modules\rssfactoryfeeds\feedsdisplaystoriestiles\view.php
at line 44 you will find $params['startTransition'] = true;

add beneath:
$params['startOffset'] = -1;