How To Create A Forum

I'm On Forums Alot And I Want To Start Making My Own Sigs And Orbs, But I Don't Know How. Everyone Gives Step-by-step Process For Doing It With ADOBE Photoshop, But No One Explains It For Arcsoft Photoshop. It Has Alot Of The Same Tools And Things, So Someone Please Help Me, Or At Least Give Me A Guide To Using It.