Yes, there is a verb and and a noun and they are in the same tense therefore it is gramatically correct.
"When is the best time I can call you?" is correct.
Yes, it is correct to say 'when you get back home, tell her to call me'. You insert a comma after the word 'home'.
Pickerel is correct
Yes. You could also say, "Can you call her in a little bit?"
Well, if you are she, and she is you, then you could properly say, "This is she." If I call you on the phone, and ask for you, and you say, "this is she," you are correct. Easy way to tell if you should say "she: or "her" -- say the sentence backwards. You woudn't say HER IS (this or any other adjective) but you would say "SHE IS (adjective).
No this sentence isn't quite right. You should say "I suggest you call her tomorrow".
It depends what you are saying. For example, it's correct to say this: "Walk in a straight line unless otherwise directed". It is not correct to say something weird like "Well call me unless otherwise you don't want to" or something. But it can be done.
PROGRAMER Or: programmer. Using the correct spelling (so tempted to say grammar).
No, that is not correct. If you are telling someone that you will phone them at some future time, the sentence would be, I will give you a call. You might also be talking about a something possible rather than actual; for example, if I give you a call, would you be willing to talk to me? But you would not just say, I give you a call.
dziadek (sounds like jadak) that's what my grandkids call their grand dad hope its correct
Yes. We say A flock of birds roosted in the branches of the trees.
PROGRAMER Or: programmer. Using the correct spelling (so tempted to say grammar).