He gave me a lot of readings for you :)
My suggestion is that you read the long paper first, but focus particularly on the structure of MLN, rather than the proofy bits. So maybe skip 10-17 and read over the applications as thoroughly as you like.
Then please read the other 2 papers carefully :)
https://umdrive.memphis.edu/aolney/internal/cogsci_readings/pedro_readings.zip