--- a/README
+++ b/README
@@ -34,12 +34,12 @@
 Octave requires approximately 1.5GB of disk storage to unpack and
 compile from source (significantly less if you don't compile with
 debugging symbols).  Once installed, Octave requires approximately
-450GB of disk space (again, considerably less if you don't build
+450MB of disk space (again, considerably less if you don't build
 shared libraries or the binaries and libraries do not include
 debugging symbols).
 
 To compile Octave, you will need a recent version of GNU Make.  You
-will also need a recent version of g++ or other ANSI C++ compiler.
+will also need a recent version of g++ or another ANSI C++ compiler.
 You will also need a Fortran 77 compiler or f2c.  If you use f2c, you
 will need a script like fort77 that works like a normal Fortran
 compiler by combining f2c with your C compiler in a single script.
@@ -60,7 +60,7 @@
 Octave's manual has been revised for version 3.0, but it is lagging a
 bit behind the development of the software.  In particular, there is
 currently no complete documentation of the C++ class libraries.  If
-you notice ommissions or inconsistencies, please report them as bugs
+you notice omissions or inconsistencies, please report them as bugs
 to bug@octave.org.  Specific suggestions for ways to improve Octave
 and its documentation are always welcome.  Reports with patches are
 even more welcome.