Sketch experience
As a professional print editor, I had a substantial experience with publishing software (InDesign and InCopy) and an operational knowledge of Photoshop. But vector design software was my weak point, so I've decided to learn how to use Sketch.
Working as a 'Creative Designer' in our Digital Media Development course, I create all the group assignments templates in Sketch. It's not an obvious choice for this kind of task, but challenges help me learn faster. Prototyping is a breeze after you create a table with 20 rows in Sketch.