  This is a report of a scientific project carried out at Ecole Centrale
Casablanca in 2019. This work is an entry into the world of Random Walk in a
Random Environment (RWRE). We will discuss some intuitive concepts such as
recurrence, location, and random potential. We will thereafter focus on
providing an "electrical" understanding of this type of walk and finally
explore an application of RWRE to graphene conduction.
