I believe it should be "Introducing himself".
The phrase "are as follows" is grammatically correct when introducing a list or explanation. For example, one might say, "The steps are as follows." On the other hand, "includes the following" is also correct but typically used to indicate that what follows is part of a larger set. Both phrases can be correct depending on the context in which they are used.
Yes it is =)
Yes, 'for free', is grammatically correct.
"Not like that" can be grammatically correct, depending on the context.
Yes! That is grammatically correct!
This is not grammatically correct. The correct form is 'you do not know', or the abbreviated 'you don't know'.
'What a drunkard you are' is a grammatically correct English sentence.
"That was wrong" is a grammatically correct sentence.
Yes, it is grammatically correct.
Yes, Almighty God is grammatically correct.
Sure. It would also be grammatically correct to write He spoggled his nubbix on the goober. Grammatically correct and meaningful are not the same.
The phrase "Is you don't miss me do you" is not grammatically correct. It should be rephrased to something like "Don't you miss me?" to be correct.