diff --git a/cst337/lec/lec2.md b/cst337/lec/lec2.md
index 79dc0b6..5e3236d 100644
--- a/cst337/lec/lec2.md
+++ b/cst337/lec/lec2.md
@@ -34,6 +34,20 @@ More convinient than binary for obvious reasons; namely it doesn't look like spa
 Our 4-bit range from earlier {0000-1111} now becomes {00-ff}.
 More pedantically our new hex range is 0x00 to 0xff.
 
-### Ascii in Hex Dumps
+> Binary mapped \
+It happens that 1 nibble makes up 0x00 to 0xFF. 
+So for now just get used to converting {0000-1111} to one of it's respective values in hex and evetually it should be second nature.
+Then just move on to using hex(like immediately after these lessons).
+Even the most obfuscated binary files out there don't resort to architectural obfuscation; until they do.
 
+> Ascii in Hex Dumps \
 Kind of a side note but most ascii text is from 0x21 to 0x66ish[citation needed]
+
+## 32 v 64 bit \
+For those with a 32 bit background know that these notes deal with 64-bit architecutres mostly. So some quick terminology which might randomly throw you off anyway.
+> double-byte/ half-word \
+The latter is dumb but soemtimes used so wtever.
+
+> word = 4 bytes
+Etc onward with doubles, quads...
+