===Exercise 0: how to go over this training===
This exercise will introduce you to this training. For every session, is there a few exercises to be done (like this one). In these exercises you will have to answer and work on problems and report the answers in a Worksheet. There is one work sheet per session. When you are done, you upload the worksheet to your shared GoogleDrive (GD) folder. For every session there is also a Challenge. You will have to work on the challenge and upload the results in GD as well. For example:
* (a) How many sessions are there in this training? Write down the results in the Worksheet (WS)
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* (b) How many challenges you will have to overcome to finish this training? Write down the results in the Worksheet (WS)
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* (c) Knowing that you will need at least 4h to cover every session (if you are very focusses) and one hour for every challenge, how many hours will you need to finish the training and in how many days do you plan to do this? Write down the results in the Worksheet (WS)
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