In the combinations "ого" and "его" this letter is pronounced as "в", especially when these combinations are at the end of the adjectives. "что нового?" is pronounced like "shto novaVa" "до скорого" is pronounced like "da skoraVa" If they are at the beginning or middle of the word (огород, договор..), nothing happens: "г" remains "г". In the adverbs (много, строго, дорого...) "г" also remains "г". I hope I helped you. If there's anything else I can help you, please, feel free to ask me. Have a nice day.

In endings -ого and -его Г turns into B sound: большого - большо[ва], синего - сине[ва], скорого - скоро[ва], чего - че[во].

Kyle, this happens in the adjectival endings ого/его. And in a pronoun его. (technically, adjectival endings are just pronoun 'его' who sticked to an adjective. Красна+его=красного=red-one, red-that, the-red. You'll see later than we have long and short forms of adjectives) This doesn't happen in -ого- otherwise: огород [ɐɡɐˈrot] 'vegetable garden' дорого [ˈdorəɡə] 'it is expensive', 'expensively'. дорогой [dərɐˈɡoj] 'dear', 'expensive'.

Yes, you hear it correctly :) In the combinations "ого" and "его" this letter is pronounced as "в", especially when these combinations are at the end of the adjectives. As you may have noticed, even the word "его" ("his") are pronounced as [ево]. If they are at the beginning or middle of the word (огород, договор..), nothing happens: "г" remains "г". In the adverbs (много, строго, дорого...) "г" also remains "г".

You can also meet a few instances where г is pronounced like х in a few words like легко