Welcome Joker.
For starters, you can learn a lot from Mark TheKeeper's tute's in the forum's welcome page. Divided into 3 sections(beginner. intermediate & advanced) , you can take your time learning the ropes of PS at your own pace.
Visit the many areas and threads in the forum for a topic you find of interest to you. Give attention to Gary Boutons' The Inside Track for more tips.
Take part in the projects and challenges. Regardless whether your creations are works of art or disaster, post them. We'll be here to give you advice and tips on how to improve your craft. We won't bite

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Above all, have fun, fun and more fun..... it's boring without it.
vee