Like the others said, starting with physical drawing is probably the best way to go, as digital drawing is heavily based on technics made for using a pen and paper.
However, before you go and buy an expansive course that may not be right for you or an expansive professinal software suite that may be far above what you need, you should check out David Revoy's Krita tutorials, especially the ones for beginners in the categories that interest you (text and videos, greatly helped me getting started).
* au niveau des politiques (comme bien précisé dans l'article). Au niveau des citoyens, la France est le pays avec le plus de signatures pour la petition pour taxer les riches (d'ailleurs si vous avez pas encore voté, allez y !)