Most of the 50,000-volume wall is in Japanese, but the Manga Expo has translated titles and the permanent exhibition carries English. It is a library, not a ride.
Yes. Hanamikoji is a public road and stayed open. The restrictions apply to private side lanes, private property and intrusive photography, not the main street.
Arrive around 10:00 to 10:30: most shops are open and the arcade has not reached lunchtime crowding. Earlier only if you confirmed a specific counter is open.
Take a West Japan JR Bus from Kyoto Station that actually stops at Ryoanji-mae, about one minute from the temple. Not every service on that route calls there.