It seems you’re looking for a guide related to (the multimedia software/platform, not the comic character), Avi (likely Avi Kaplan, the singer, or a reference to the video format), and txt (texting/files) within a lifestyle and entertainment context for two teenage students .
Given the phrasing, I’ll assume you want a practical, educational guide about using , combined with Avi video files , and txt-based planning , for student projects involving animation, short films, or digital portfolios.