Learn Turkish: Ekonomi hakkında kapsamlı bir rapor okuyacağız. - We will read a comprehensive report about the economy.

When using hakkında (about) with regular nouns, the noun stays in its plain, dictionary form. You only use the genitive ending (like -nin) when using pronouns, as in benim hakkımda (about me) or senin hakkında (about you).

Could I use ile ilgili or -A dair instead of hakkında in this sentence?

Yes! You could say ekonomi ile ilgili (or ekonomiyle ilgili) which means "related to the economy". You could also say ekonomiye dair (concerning the economy). Notice that dair requires the dative case ending (-ye), while hakkında and ile ilgili take the plain noun.

Why is bir placed after kapsamlı instead of at the beginning of the phrase?

In Turkish, when you have an adjective and the indefinite article bir (a/an), the standard order is Adjective + bir + Noun. So, "a comprehensive report" becomes kapsamlı bir rapor. Saying bir kapsamlı rapor sounds slightly unnatural to a native speaker.

Why does the future tense ending in okuyacağız have a ğ instead of a k?