Find command explanation

[AOB Technologies Ltd.]

Hi,
When I type "find --help" at my RedHat Linux (model 2001 or so) I get all the 
syntax of the command with so many parameters.
Nevertheless, it is very hard to understand the proper use for a desired kind 
of result and some examples or further break-down explanation about the 
parameters would help a lot.
For example, the option -mount or -mmin are not explained and thus I don't know 
what would be their result.

In particular, I'm looking for files containing certain text string (probably 
DOC files). Is there any specific format for this command to meet this 
requirement?

Many thanks,
Sam.

# find --help
Usage: find [path...] [expression]
default path is the current directory; default expression is -print
expression may consist of:
operators (decreasing precedence; -and is implicit where no others are given):
      ( EXPR ) ! EXPR -not EXPR EXPR1 -a EXPR2 EXPR1 -and EXPR2

      EXPR1 -o EXPR2 EXPR1 -or EXPR2 EXPR1 , EXPR2
options (always true): -daystart -depth -follow --help
      -maxdepth LEVELS -mindepth LEVELS -mount -noleaf --version -xdev
tests (N can be +N or -N or N): -amin N -anewer FILE -atime N -cmin N

      -cnewer FILE -ctime N -empty -false -fstype TYPE -gid N -group NAME
      -ilname PATTERN -iname PATTERN -inum N -ipath PATTERN -iregex PATTERN
      -links N -lname PATTERN -mmin N -mtime N -name PATTERN -newer FILE

      -nouser -nogroup -path PATTERN -perm [+-]MODE -regex PATTERN
      -size N[bckw] -true -type [bcdpfls] -uid N -used N -user NAME
      -xtype [bcdpfls]

actions: -exec COMMAND ; -fprint FILE -fprint0 FILE -fprintf FILE FORMAT
      -ok COMMAND ; -print -print0 -printf FORMAT -prune -ls