I was struggling with irregular verbs, which change form according to the tense and the target of the conversation, in my Intensive Spanish class. To help me study, I sketched a flowchart using information from my textbook. It worked: I got an A in the class.
After the class ended, I used Microsoft Visio to convert the sketch into a professional flowchart. I rewrote and rearranged the original decision prompts for clarity. Overall, I went through four drafts of the chart with multiple paper sizes and color schemes before reaching this final version.
Resources
Blanco, José A. and Philip Redwine Donley, late. Adventuras: Primer Curso De Lengua Española Volume 1. 4th ed., Vista Higher Learning, 2014.