Hi, dream! 
I use photoshop to make my designs. There are many techniques you can use and there’s no step by step… usually I “visualize” what I want to do and try do to it. Often I find something better on the way, by accident, and keep going with it.
I google tutorials I can use on my designs (based on what I want to do), so I don’t have a specific page I go to. We have another post here with some tips: http://discussions.viki.com/t/time-to-talk-about-our-artwork/199/48