The introduction documents are on CDL Moodle, under the topic number four:
http://moodle.cdl.ch/course/view.php?id=753
Create four different Photoshop files.
1. Editing
Download a picture and apply at least to different filters. Show the original one and the edited on in the post.
2. Creating
From a white 800×800 pixel picture create your own realistic scenery.
3. Photo retouch
Take a picture of a famous actor that has a particular sign or characteristic on his face and remove it.
4. Detournement
Take a picture, cut a part of it and paste it on another one.
Create a post on your Blog with the results (and original pictures if any with source) and write 20 words per section.