[Q] Need help to learn porting topic

i am trying to port this Slimkat rom from moto G but no success. I am just learning to port so help will be appreciated.

I am using mokee as base rom. After i boot, it shows mi logo and then stucked at slimkat logo.
I tried changing Bootclasspath but it directly goes to fastboot. Any change in boot.img is directly taking me to fastboot. Please help me to learn porting.
If anyone had ported any rom then please tell me what base rom you used and link for port rom.
Thanks in advance