Be prepared for changing weather. Mornings are usually warm and sunny. Thunderstorms with cold wind-driven rains are quite often the afternoon weather. Don't drink the water it may look clear, but giardia, a parasitic protozoan, may be lurking there looking for an intestine, and the results are not pleasant. Stay on the trails.
Shortcuts lead to erosion and long-term damage.
Observe the wildlife and flowers, but leave them alone. A long camera lens is great, as long as one does not harass the animals while taking their photograph. Picked flowers quickly lose their beauty. Campfires are strictly forbidden on the eastern slope. They leach minerals from the soil and leave the ground sterile, not to mention the wood loss to the forest.