There are numerous sites where you can get actions, plugins and stand alone programs that can help you in the creation of digital art.
Here's a list of places where you can either get freebies or download demos for evaluation. BPN is not in any way affiliated to any of these websites, this is only informational:

http://www.photoshopsupport.com/tool...tions-ACTIONFX Free actions

http://www.panosfx.com/index.php?opt...d=13&Itemid=27 Free and For Sale

http://www.adobe.com/cfusion/exchang...&Submit=Filter Free actions

http://www.adobe.com/cfusion/exchang...c=16&loc=en_us Free actions

http://www.flamingpear.com/download.html Demo plugins

http://www.alienskin.com/snapart/ Stand Alone program

http://www.autofx.com/ Plugins for sale