KREUTZER'S etudes are amongst some of the most popular prescribed to youngsters and with good reason: They are mostly well-composed, less boring to play as a result, and the ones that are less melodic are quite "violinistically" written, and so it makes them fun to play when the tempo is increased! (Difficult to say the same about certain other etudes, where although they also focus on one or two major technical issues, you would NOT have fun or feel at ease musically playing them faster than you should). 
If you are following our list of exercises in ascending difficulty in each violin school (arranged in order of our pages: For example, the Franco-Belgian School starts with Capet and ends with Wieniawski), then you will have tackled Capet's "School of Bowing Technique" first: In this case, Kreutzer's etudes should be seen as short and easy variations that present no particular difficulties!
To save you time, you don't need to play all of them to have a good grasp of Kreutzer's teachings - here are the selected etudes and practice tips (numbered according to the Schirmer's edition)!
* = Recommended Preparation for Paganini Caprices/Concerto, Wieniawski Op.10 Caprices, or general technique used in Bach, major concerti and virtuoso pieces