Photoshop as a program use for making artworks as digital art "drawing maybe or Manipulated...etc" . but swish max is a program for Flash " making flash cards or stuff as i did or home pages for website, animations ..etc" .
with Photoshop you can do many stuff ! as 75% of the people inside DeviantART do .. with swish max you can do many things but you must have a knowledge in codes and stuff like that ..
both of them easy but first you must be sure and have a good ambition then start to learn .. you can learn by looking for tutorial but not all of them are useful or good ! some people upload a tutorial on youtube and it's about 20 min ? but you can avoid this and make what they made with 5 min !!! , so you have you learn yourself by yourself and never give up
if you need to know anything else please tell me ..