diff --git a/README.md b/README.md
index 54e05a2..fc17ff6 100644
--- a/README.md
+++ b/README.md
@@ -1,11 +1,13 @@
 # memory allocator
 
-it allocates memory *(in gibibytes (GiB))*
+it allocates memory
 
 ## how to use
 
 - run the executable
-- enter how many gibibytes you want (max is how many gibibytes of memory you have...or more!)
+- enter how much memory you want to allocate
+        - i.e. "1g" = 1 GiB = 1073741824 bytes
+        - the limit is how much memory you have...or more. your funeral.
 - confirm (y)
 - wait for the program to allocate the memory
 - your memory is allocated
@@ -16,7 +18,7 @@ it allocates memory *(in gibibytes (GiB))*
 ## how to compile
 
 - get a c compiler (i use gcc)
-- `gcc -o ./allocatememory ./main.c`
+- `gcc -o ./allocatememory -O2 ./main.c`
 - ???
 - profit