Edits on README

README.md

@@ -43,11 +43,13 @@ for you. This includes building from source, obtaining Sage from a package
 manager of your platform, installing in conda environment, or using Sage in the cloud.
 
 This **README** contains general instructions for building Sage from the source
-code in the [GitHub git repository](https://github.com/sagemath/sage). If you
-encounter any difficulties or need further explanations while following the
-instructions below, please refer to the detailed guide in the section
-[_Installation from Source_](https://doc.sagemath.org/html/en/installation/source.html)
-of the Sage Installation Guide.
+code in the [GitHub git repository](https://github.com/sagemath/sage) for users
+installing Sage on their personal computers with internet connection.
+
+If you encounter any difficulties or need further explanations while following
+the instructions below, please refer to the detailed guide in the section
+[_Install from Source Code_](https://doc.sagemath.org/html/en/installation/source.html) of the Sage
+Installation Guide.
 
 Instructions to Build from Source
 ---------------------------------