async load means that it does not block loading other elements of your page. gtag('consent', 'default', { 'ad_storage': 'denied', 'ad_user_data': 'denied', 'ad_personalization': 'denied', 'analytics_storage': 'denied' });

Alnwat: Ktab

It seems you're asking for a complete guide to — likely a transliteration of the Arabic "كتاب النوّات" (Kitāb an-Nawwāt).