If you're going to learn Chinese, then it's a no-brainer that you'll have to study Chinese grammar in order to speak and write correctly.
Believe it or not, Chinese grammar is actually easier than English grammar because it doesn't change according to gender or number (only with some personal pronouns). This is a feature of other East Asian languages like Japanese.
There are many Chinese dialects too - they generally have the same grammar and writing but great differences in vocabulary and tones. Don't worry - even if some dialects are unintelligible, Mandarin Chinese grammar is universally understood.
Mandarin Chinese is the main spoken form of Chinese, and it has more than 920 million native speakers (+ 200 million non-native speakers).
As you study Chinese grammar, bear in mind that you need to pay attention to the order of words.
Chinese grammar has a high level of complexity in other ways which we'll get into as you follow along.