First Easy Jtag use

Hello everyone, today I received my Easy Jtag, I used the basic version to date. I’m trying to understand how it works but it is a bit difficult. I have several Samsung N7100 unbootable, just go in download mode and I would like to attempt to recover but I do not know how to move because I never used the jtag. in addition to the box I also got this:

Can anyone help me please?
thank you so much….:)