Summary

Andy Blunden The Meaning of Hegel's Logic — II: The Meaning of “Being”

That which begins, as yet is not, it is only on the way to being. The being contained in the beginning is, therefore, a being which removed itself from non-being or sublates it as something opposed to it. [Science of Logic, With what Must Science Begin?]
And Hegel here shows how this internal contradiction which is discovered in a concept (in this case the concept of "Being") is its "motive force", which drives the concept towards its own negation, i.e. Being is Nothing, is therefore Becoming.
Source: Wikisource

Andy Blunden The Meaning of Hegel's Logic — II: The Meaning of “Being”

Quality - Quantity - Measure The Subdivisions of Being are Quality, Quantity and Measure. Hegel says:
Quality is, in the first place, the character identical with being: so identical that a thing ceases to be what it is, if it loses its quality. Quantity, on the contrary, is the character external to being, and does not affect the being at all. Thus, e.g. a house remains what it is, whether it be greater or smaller; and red remains red, whether it be brighter or darker. Measure, the third grade of being, which is the unity of the first two, is a qualitative quantity.
Source: Wikisource

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