Shiva Purana unfolds in seven major sections (amhās), each bearing its own flavor of Shaiva lore:

1. Vidyeśvara Saṁhitā
2. Rudra Saṁhitā
3. Koti‐Rudra Saṁhitā
4. Uma Saṁhitā
5. Kailāsa Saṁhitā
6. Vāyaviya Saṁhitā
7. Kāmikā (sometimes called Cāmuṇḍa) Saṁhitā

Across these seven samhitas, the total number of adhyāyas (chapters) hovers around a century—but exact counts dance a bit depending on the manuscript tradition:

• Classical reckoning fixes the Purāṇa at 100 chapters.
• The popular Munshi Bhaṭṭa edition (early 20th century) prints 81 chapters.
• A recent critical edition (2019, MLBD) settles on 77 chapters after collating five North-Indian manuscripts.

Each samhita varies in length—Vidyeśvara and Uma Saṁhitās tend to be the heftiest, while Kailāsa and Vāyaviya are comparatively brisk—yet they all weave into a single tapestry glorifying Śiva’s many moods: the fierce Rudra, the householder Śiva, the cosmic yogī, the compassionate Bhairava.

This seven‐fold structure isn’t mere bookkeeping. It mirrors how life itself unfolds—from the hidden (Vidyeśvara) to the ascetic heights (Kailāsa), the elemental winds (Vāyaviya) to the ecstatic dance (Cāmuṇḍa). Modern events—like the 2024 Kumbha Mela at Prayagraj—have inspired fresh interest in those very passages that celebrate Śiva’s descent as Gangā, or his tandava whirl across mountain peaks.

So, in a nutshell: seven sections, roughly eighty to a hundred chapters, depending which Śaiva lineage or scholarly edition is your guide. It’s a hearty serving—enough to keep any devotee or curious reader poring over its verses for a lifetime.