Yes, Guinea Pigs are day time animals x
It depends on what kind of guinea pig you have. If you have a day time guinea pig then it will actually want light. But you probably have a night time meaning it is active at night then your guinea pig would not like the light.
any time of the day, but only once a day
A guinea pig spends time during the day and the night sleeping. They usually rests lots and eats during the day and they mostly sleep at night.
you can hold the guinea pig by then for short periods of time.
i recomend that you don't
i think an average guinea pig should 5-15 times a day i can ensure you if they have more they are perfectely fine for an example my guinea pig did about 30 one day but that was because it had a big meal.
your should hold your guinea pig for about 30min to an hour each day
Your male guinea pig is trying to mate with your female guinea pig.
Spend time with your guinea pig everyday , etc, grooming, rubbing , ...and so on .
Yes, a guinea pig ABSOLUTELY needs plenty of timothy hay EVERY DAY.
no, but leaving it unfed for 2 or more days can harm your guinea pig.
Not necessarily, though it is highly recommended to keep at least two guinea pigs. If you can handle and play with your guinea pig at least one hour a day, though your guinea should be fine.