For Your Information
With the three sources (found below) are some of the most reputable sites to go to for help. They all keep their information and sources up to date. The information on the sites is dependable and accurate. Unlike wiki sites, their information comes directly from the programmers of each application. Dribble offers all sorts of classes on specific topics, so if you are having trouble with a specific program, this will offer detailed information in a learning experience.
All three have blog posts and threads, where you can look for other information, tips, and tricks. But the ones posted on the site by the site managers are going to be the most accurate. The steps described for a function or feature are well laid out and easy to read. On Adobes site, there are also videos, linked to their YouTube pages. So, you also have the option to actually see it being done, which is needed for some learners like me.
I use the Adobe help center the most often and will continue to use it. I can efficiently navigate to the information I am needing at that time. Canva is similar to Dribble, but they offer a lot of topics to explore to learn more information. I have used it occasionally and will still continue to use it. All three are excellent reference sources to keep on hand. Learners from all stages will be able to gain access to useful information. Adobe will still be my number one choice.
https://dribbble.com/resources/free-graphic-design-courses-online
https://www.canva.com/designschool/