Subscribing to a program means that you subscribe to a pre-defined set of pulses that will be sent on a fixed schedule. Which pulse and questions will be sent first depends on when you activate the program. Look at the timeline in each program to see where in time you will get started. You can also look below each question to see what time of the week the questions are set to be sent. If the questions are set to Monday at 10.00 am and you subscribe to the program on a Thursday, the questions will be sent directly since the time setting for the questions has passed already.