Grammarly
Grammarly Blog: Countable and Uncountable Nouns
This Grammarly Handbook resource clarifies the difference between countable and uncountable nouns. Examples of countable and uncountable nouns are provided.
TES Global
Blendspace: Noun Types Review
A six-part learning module with links images, websites, slides, and a video on different types of nouns including common, proper, collective, verbal, compound, abstract, concrete, countable, and uncountable.