Check out this blog post on Open String book studies with free violin bow exercises!
Open String Bow Workouts for Violin, Book Two
One great thing to add to the beginning of your violin practice (at any level of playing!) is a short study on open strings.
Open-string studies on the violin can help you focus on your bow and how it interacts with the string. Good bow technique is essential for creating beautiful sound.
This second book of new and exciting bowing workouts for the violin gives you 110 exercises to train your bow on open strings before you begin the rest of your practice.
Since there are no left hand notes, you can focus entirely on improving the dexterity and control of the right (bow) hand.
This book gives violinists a tremendous resource for developing an all-around bow technique that meets the demands of the violin repertoire, as well as a path to creating better tone.
The exercises in this book work on on staccato and articulation, dynamics, double stop staccato and string crossing, chords, spiccato, and more! Note: The main focus of this book is on bow control with articulations. Smooth, connected bows and string crossing are covered in Book One.