A membership in the American Youth Hostels lets you stay at more than 200 inexpensive hostels in the U.S. and something like 5,000 more around the world. You’ll meet all sorts of other travellers, exchange lies, make alliances, and perhaps modify your plans after hearing of some more interesting option from someone who’s just been there. The two international handbooks have some mediocre general tips on trip planning and travel; their main use will be the comprehensive listing and descriptions of all the hostels in each country and their associated customs. I can tell you from considerable experience that hosteling can be a good way to go, especially if it’s your first time out. You only need to be young at heart; all ages are welcome.