https://www.virtualsheetmusic.com/experts/expert_id/staccatos/ - In this video, Prof. Fitzpatrick talks about up and down bow staccatos with deep details that will answer many of your questions.

William Fitzpatrick: Just Me and My Vibrato - From the Violin Expert

Virtual Sheet Music's Violin Lessons Videos give you violin lessons and violin insights from our violin experts Prof. William Fitzpatrick and Lora Staples. If you are a violinist, violin teacher, a violin student or simply a violin enthusiast, these videos are for you.