
 Hi, For the leveling of the print, 
you need to adjust the four corners of the print platform.
The distance between the reference nozzle and the hotbed
 is the height at which a sheet of A4 paper can move normally.
For specific operations, you can refer to this:
https://www.youtube.com/watch?v=a3eCEiqF_00
For the installation and testing of 3D Touch, you can refer to this:
https://www.youtube.com/watch?v=_RtsZDbR2po\
I hope this can help you. 

-Keep your mind and try to test it. 
 
 
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