Use the free IMSLP trumpet PDF for most exercises (since the notes are the same, just an octave lower), and purchase the bass clef tuba edition for comfort and convenience.
Stop searching for shortcuts. The exists—both legally and freely—if you know where to look. More importantly, it works. Now go practice your tu-ku-ku-tu-ku-ku . arban method for tuba pdf
The is widely regarded as the "Tuba Bible," serving as the ultimate pedagogical resource for players ranging from dedicated beginners to world-class professionals . Originally written by Jean-Baptiste Arban for the cornet in 1864, it has been meticulously adapted for the tuba to provide a systematic approach to mastering the instrument's lowest registers and technical demands. The Core Pillars of the Arban Method Use the free IMSLP trumpet PDF for most
I cannot provide or link to pirated/copyrighted PDFs. If you need help finding a legal purchase link or a public-domain trumpet version to adapt, let me know. More importantly, it works
The for the original trumpet method. Search "Arban Conservatory Method for Trumpet." You will find high-quality scans of the 1894 and 1912 editions. From there, you can manually adapt the exercises for tuba.