You should join an organized group or have the local travel operator arranged for you. In general speaking, from April to October is the best season for Tibet tour. But it really depends on your route. In fact have a winter normal schedule tour will be quite comfortable .Because in Winter, there isn't full of tourists, you can enjoy the beautiful scenery freely. Tibetan people are very kind and hospitable, you can feel free to talk with them.
Religious beggars are an accepted part of society in Tibet.
Notice if the beggars are the old men and women who dress in shredded, bulky clothing, while the Younger ones may have a monkey on a chain, a spectacle of great interest to the Tibetans. These beggars are professionals, having less meritorious intentions than religious pilgrims. Just wave them off as the locals do if you don't want give anything. What should I bring for the plateau weather. Tibet's high altitude and the atmosphere allow the sun's solar radiation to strike the earth with unusual intensity.