There are 2 versions of the Bodice Block instructions:
The Bodice Block instructions are split between 2 videos: Bodice Front & Bodice Back.
The Sleeve Block is separate; there is only one version of the Sleeve Block and Imperial measurements are used.
There are 5 videos within the Pants Block instruction series. When I started the series I couldn't work out how to write instructions that worked for all body types. If I were to redo these videos (and that is to say if I had the time to), I might be able to condense them all into 2 videos - measurements and the instructions. However, as it is now, there are 5 videos.
There is only one version of the Drafting the Sleeve Block video, with Imperial Measurements.
There are some blog posts that might be of interest if you would like to understand the sleeve better: