yeah, all I knew how to use was paint until I took a comp. tech class where we learned how to use photoshop. Had a hard time adapting because there is more you can do it just takes the know how to do it(which the teacher didnt give easy), I still cant do some of the fancier things in photoshop. The teacher even asked me if wispering profanity at the computer was helping. Guess it did because I passed.
Now I use paint.net for everything because its a mix of both (but more on the photoshop side.)