CANVA is a free software that does not take that long to learn. Then once you know how to use it, you can use it to create lots of lovely graphics using free or low-cost templates. You can find lots more at Creative Market including nice templates from Studio Loire (above).
You can also use Canva to create wonderful brochures and literature for non-profits, like this template to promote local pet adoption.
This online course canva template is ideal for anyone who earns money online. Make ebooks and templates to create and promote your expertise. You also receive a sales page template, to create a landing page to sell your course. Use Canva to drag and drop photos and content, change colours and fonts to match your brand, and share your awesome course with the world. You can also make the templates into an editable pdf, so your students can edit it directly. Full instructions are included.
Bluchic Canva Templates
Bluchic offers nice pre-made web themes and shops, with matching CANVA templates, an ideal way to completely brand your business: