Nairobi for a Weekend

Hi! I (24F) am an American woman who will be spending the summer outside of Eldoret for an internship. I booked a weekend trip to Nairobi in mid June. What are things that I must do/placed I must go while I'm there? What are some dishes that I need to try? Also, any travel tips would be greatly appreciated as I am traveling by myself without a guide. Asante sana!