Below are a list of online resources that include videos, demonstrations, techniques, etc. You will be to have a connection to the internet to be able to access these links.
PiXimperfect This YouTube channel offers many techniques, primarily for Photoshop, covering basic editing right through to some fairly advanced stuff. It is updated several times week with new features and is well worth checking out.
Adobe Photoshop, not surprisingly another Photoshop channel, this one offers ‘1 minute techniques’ together with explanations of the software on a more in depth manner.
Chorley Photographic Society, one of our local groups that regularly shares camera and software techniques along with many local photographic locations.