Yes, you can correctly state that something "informs the process" of something.
For example, one of Merriam Webster's definitions of "inform" gives the example phrase "the principles that inform the process of teaching."
for process
"On a train" is correct grammar.
The grammar is correct as it is.
Grammar.
No. The correct grammar is; "Yes, I have a girlfriend."
for process
"It is to inform" is correct.
No, "will be had" is not a correct grammar. The correct grammar would be "will have."
No, it is correct grammar, not a correct grammar.
"On a train" is correct grammar.
no_____If the sentence is You do do that (meaning You are in the habit of doing that) the grammar is perfectly correct and the sentence 'does have correct grammar'.
"July has just been started" is not correct grammar, instead the correct grammar is "July has just started."
Grammar.
This will be an exciting month is correct grammar.
The grammar is correct as it is.
Yes, that is correct grammar.
No, the correct grammar would be "I hate you the way you hate me."