I would like to visit Yosemite for a week, but I don’t even how to get there, let alone what to do once I arrive. Is a week a good time frame? On one thread, there was a side discussion by several people who had visited the national park, so I am hoping to get some advice from people who have been to Yosemite.

San Diego is the closest city, so I imagine that I would start by flying to San Diego. I would prefer not to rent a car if that is possible. Is there a train or bus that I could take to Yosemite? Where do people stay? Do they have guided tours? Are there some trails not covered by tours that are worth taking? I enjoy hiking, but I don’t want it to be too strenuous.