The sequence at the bottom refers to the exercise from the previous page. It indicates exactly how to handle the pattern when you reach the twelfth fret and start coming back down. Make sure the 4 finger downward slide is clean.
For the second part of this exercies, do the exact same pattern with the same right hand technique (this is another one you can't practice enough), and with the left hand substitute the 3 finger for the 2 finger, as indicated in this sequence chart:
Be careful that the left hand does not revert back to the first part of this exercise without you noticing, so start slowly and with much attention to what both hands are doing. Precision is important to get a clean, accurate sound out of your fingerstyle.
Things to keep in mind: as with the other exercises you want all the different attacks (the i, m, and T) to sound as similar as possible. This can be tough at first so again, practice these slowly and with precision. In these last two exercises, the use of either i or m to sound any particular note may be determined by you so long as you always
alternate. The T needs to be used as indicated. If you prefer not to use the thumb in the way I do, these exercises can still be quite effective. Use alternating free strokes for the first 5 exercises, and use i, m, and r, for 6 and 7. This is also tough if you're not used to it, and it's more of a classical approach, but is nonetheless worth practicing. Don't forget to take a short rest between exercises and not to continue if you feel discomfort - these can be very difficult exercises for a beginner.