When do we say tefillat haderech - the wayfarer's prayer? What are the differences between the prayer havinenu and the short prayer one says in place of shmone esreh if one is in a place of danger. In what direction does one pray? One who is leaving early in the morning - what does one do regarding prayer and shema if it is before the time that one can say those prayers? Does one pray musaf if one in not part of a community? What are the different opinions? If one forgot to add yaale v'yavo - the prayer for Rosh Chodesh - does one have to repeat shmone esreh? On what does it depend? One needs to pray with the proper frame of mind. The early chassidim would meditate an hour before prayer for this reason. From where can we derive the importance of prayer with the proper frame of mind? What is the meaning of the phrase "be happy with trepidation"?