Internship opportunities are a brilliant way to gain competence. Why not check out Spain which at present has 9 internship opportunities where you can learn Graphic Design skills. The most common categories in this field are at present Design and Communication Design. For this job, it's a good idea to know about fields of expertise such as CSS, Adobe Photoshop and Graphic Design.
Out of the companies at present hiring for Graphic Design on Jobspotting, none of these are startups. Many other skills are in demand in this region. You should check them out on the right side of the page.