I like tutorials that have images - not necessarily one image for every step. Sometimes having arrows or circling parts of the image makes it clearer about what to do.
I don’t really like the idea of animations because you can’t skim read through it and probably can’t go forwards and backwards through it easily (like text) - and it would probably be lower res and take longer to download.
I also like it if you can download the finished blend file and perhaps some steps in between.