suggest an easier text ??

From: ames kin (ames_kin_at_yahoo.com)
Date: 11/18/04 

Date: 17 Nov 2004 21:47:04 -0800

The following book seems useful for what I'm doing currently.

Author Freidlin, M. I. (Mark Iosifovich)
Title Random perturbations of dynamical systems / M.I. Freidlin, A.D.
Wentzell ; translated by Joseph Szücs
Published New York : Springer-Verlag, c1984
 
However the level seems to be over my head.

can someone suggest a text that deals with similar topics that is
geared towards undergraduate/ lower graduate levels?

thanks all in advance