Clarify instructions for building CSFML

readme.md

@@ -36,7 +36,19 @@ Of course, you can also find the CSFML API documentation in the SDK.
 
 ## Building
 
-Set `SFML_ROOT` to a directory containing the installation of SFML.
+Building CSFML follows typical CMake conventions.
+Here's how to get started.
+
+1. Install SFML.
+This may be done in a variety of ways including using a system package manager or building and installing SFML from source.
+The major version of SFML must match the major version of CSFML.
+2. Configure CSFML.
+If you are building CSFML for the purpose of contributing, we recommend using the `dev` CMake preset.
+This will enable a number of useful settings related to developing the library.
+If needed, set the `SFML_ROOT` CMake variable to tell CMake where to find your installation of SFML.
+The `CSFML_LINK_SFML_STATICALLY` option must align with whether your installation of SFML uses static or shared libraries.
+3. Build CSFML.
+The `install` target will install all public headers and libraries.
 
 ## Contribute