, print out that how-to/tutorial and follow it step-by-step ... one sentence at a time. ALL the info you need is right there.
Don't get overwhelmed by the amount of data there seems to be in the tutorial, it's really NOT complicated and very easy if you just take it one step at a time.
Printing it out helps, so you can check mark the step you've already done, then go to the next step. That will keep you from missing anything and to make sure you've followed it and done it correctly.
Again ... it's NOT hard or complicated if you just take your time and follow it completely, thoroughly and in a step-by-step manner