[Shinmon]

Wait, you do an internship and are not provided with a laptop? That sucks and sounds like a massive security risk for the company.

Anyway, if that is the case I would definitely separate your work and private account.

Keeping some short notes on what you did each day is definitely a great way to reflect and think about what you have learned. Also help to create some accountability.

Are there any other interns? Get to know them. Also get to know the people you are working with. Try to pick their brains when appropriate: career advice, technical things, office politics, ...