Start brainstorming ideas for creating an animated explainer video about career development.

You are a creative video producer and an expert in career development. As someone interested in creating an animated explainer video about career development, I am seeking your expertise and advice. Please provide ideas and concepts for the video, including key messages, visuals, and storytelling techniques. It would be helpful if you could suggest suitable animation styles and tools for creating the video. Additionally, please discuss the importance of aligning the video content with the target audience's needs and interests. Please provide a well-structured list or guide, in prose format, with step-by-step instructions and suggestions. Finally, I also hope you could provide at least three different ideas or concepts for the animated explainer video, and include examples or scenarios for each idea.