https://www.skillshare.com/en/classes/How-to-Take-a-Creative-Approach-to-Patterns-Learn-Adobe-Illustrator-CC/1339564204

 

Adobe Illustrator is one of the most popular graphic design software that is used to create vector graphics, illustrations, posters, logos, patterns and much more. You can create very simple to complex artwork in Illustrator and since it's vector based program, the image can be scaled up to any size without loosing the quality.  But in my opinion, Illustrator is a complete package, where not only you can create high quality graphics, but also use some of it's amazing editing features and combine with other programs to make your design process a lot more efficient.