As a student 40 years ago I wrote a thesis about all existing cello methods. Then I started writing my own method by putting all positive aspects of all methods together and revised the volume multiple times.
The music selection is the best I could find for each level progressing in tiny well prepared steps, enjoyable to play. Exercises compact and only when needed.
Volume 1 contains No 1-50 on 57 pages - first position, bow and reading skills, each piece in form of a cello duo to be able to play with a friend or teacher together - includes traditional songs, fiddle tunes and compositions by Beethoven, Bach, Purcell, Sor, Carcassi, Gretchaninov, Gruber and Neidhardt.
Probably the most researched and tested way to start learning the cello!
To each number are Video cello lessons linked published on Patreon. The links click through when viewed on phone, tablet or computer.
There are also Youtube recordings of all pieces as Cello Duos with fingerings and bowings as in the Cello Method, see https://www.youtube.com/playlist?list=PLa4x_CVYDVRXAnJJ_6HeRujngwTZ8cMEd

German - English.

This volume contains more than 100 exercises and studies providing clarinettists with the opportunity to work systematically on the most important aspects of clarinet playing: articulation and phrasing .- dexterity of fingers .- sound control and melodic interpretation .- confidence in the use of different keys, times and ornaments.
The edition is the result of many years of teaching pupils of different performance levels, from beginners to advanced students. The volume is ideal for systematic work on technique and expression, but also for a thorough 'check-up'. A valuable addition to all clarinet lessons!