Image Editing (Photoshop/GIMP) basic skills
When it comes to graphic design, Adobe Photoshop is usually the first option to consider. However, the software itself is a quite tough nut to crack — and definitely extremely hard to master. For instance, the concepts are not always intuitive and it’s not always clear when to use what tool and how to use it effectively. In fact, in Photoshop it usually takes pretty much time to achieve something you have never done before.
However, you don’t need to muddle through numerous Photoshop features and extensions for every design problem. You can use professional suggestions instead, e.g. professional step-by-step tutorials which provide excellent results and thus can save you a lot of time.