diff --git a/README.md b/README.md
index 53abcd8..5cb09c2 100644
--- a/README.md
+++ b/README.md
@@ -8,27 +8,88 @@ whatever you like with it.
 
 ## Requirements
 
-- C90 compliant compiler (tested with gcc -std=c90 -pedantic -Wpedantic)
-- Standard C library
-- Ncurses
+### Unix/Linux/macOS
+- C90 compliant compiler (gcc recommended)
+- ncurses library
+- GNU Make
+
+### DOS
+- DJGPP or Borland C compiler
+- PDCurses library
+- GNU Make (for DJGPP)
+
+See [DOS_BUILD.md](DOS_BUILD.md) for detailed DOS build instructions.
 
 ## Build
 
+### Using Make (Recommended)
+
+```bash
+$ make
 ```
-$ ./build.sh 
+
+This will:
+- Compile all source files with C90 compliance flags
+- Create the `cordle` executable in `build/`
+- Copy wordlists to `build/wordlists/`
+
+### Alternative: Using build.sh
+
+```bash
+$ ./build.sh
 Building application.
 Compile successful. Copying wordlists...
 Build completed.
 ```
 
+### Other Make Targets
+
+```bash
+$ make help        # Show all available targets
+$ make clean       # Remove build artifacts
+$ make rebuild     # Clean and rebuild from scratch
+$ make install     # Install system-wide to /usr/local
+$ make uninstall   # Remove installed files
+```
+
+## Install
+
+### System-wide Installation (Unix/Linux/macOS)
+
+```bash
+$ sudo make install
+```
+
+This installs:
+- Binary to `/usr/local/bin/cordle`
+- Wordlists to `/usr/local/share/cordle/wordlists/`
+
+The game will automatically find wordlists in:
+1. `wordlists/` (relative to current directory)
+2. `/usr/local/share/cordle/wordlists/`
+3. `$HOME/.local/share/cordle/wordlists/`
+4. Custom path via `--wordlist` option
+
+### Manual Installation
+
+Copy the binary and wordlists to your preferred location:
+
+```bash
+$ cp build/cordle ~/bin/
+$ cp -R wordlists ~/bin/
+```
+
+### DOS Installation
+
+See [DOS_BUILD.md](DOS_BUILD.md) for DOS-specific installation instructions.
+
 ## Run
 
-```
-$ cd build/cordle    
-$ ./cordle -h  
+```bash
+$ cordle --help
 cordle - C90 Wordle Game
 
-Usage: ./cordle [OPTIONS]
+Usage: cordle [OPTIONS]
 
 Difficulty Levels:
   --easy       Common everyday words (default)
@@ -45,9 +106,19 @@ Custom:
   --wordlist FILE   Use custom word list
 
 Examples:
-  ./cordle --easy
-  ./cordle --techy
-  ./cordle --wordlist mywords.txt
+  cordle --easy
+  cordle --techy
+  cordle --wordlist mywords.txt
+```
+
+### After Installation
+
+If installed system-wide, run from anywhere:
+
+```bash
+$ cordle
+$ cordle --medium
+$ cordle --hard
 ```
 
 ## Screenshots
@@ -63,7 +134,3 @@ Examples:
 **Lose Game**
 
 ![Lose Game](img/lose-game.png)
-
-## Install
-
-Just copy the `cordle` binary in the build directory to your `$PATH`. If you want to use the supplied wordlists, copy the `wordlists` directory to your binary directory as well. Or supply your own wordlist path using the command line options.