A good book to get is By Michael Moore Soloing in the Thumb Position It is really informative on technique. In addition it will have you work on arpeggios from the top down, not the traditional root to whatever ie; 1-3-5-7.
Let's not forget Simandl Books coupled with Bille (sp). These few books will provide you with much needed information to get a solid foundation as well as expanding your range on playing your Classico. I'm confident that with daily practice, within 1yr (or less) you will be very, very , comfortable playing your Classico. I'll be waiting to hear the download of the bass so I can hear what it sounds like in comparison to my acoustic bass. Good Luck!!!
Chalie Holmes (please call me Chalie)