Answer in Details
Traditionally, it is recommended to read the Shiva Purana with a pure heart, after cleansing oneself, and preferably in a clean and peaceful environment. Many devotees also light a lamp and offer flowers to a Shiva Lingam or picture of Lord Shiva before beginning the reading. Maintaining respect and devotion while reading is important.
If you are new to the text, you may also seek guidance from a knowledgeable person or a guru to understand its deeper meanings. Ultimately, the grace of Lord Shiva is available to all who approach Him with sincerity and devotion.