1. Install Node
Download and install Node setup on your machine from https://nodejs.org/en/download/
2. Install Yarn
Download and install Yarn setup on your machine from https://classic.yarnpkg.com/en/docs/install#windows-stable
3. Download Bot composer code from GIT
Download code from https://github.com/microsoft/BotFramework-Composer
just unzip and keep it on your drive.
4. Install Bot Emulator
Download and install emulator setup on your machine from https://github.com/Microsoft/BotFramework-Emulator/releases/
Just keep it on your drive. Under emulator setting browse and set ngrok path as shown below
6. Run Yarn commands
Now just navigate to composer code we downloaded from git
run command "yarn install"
run command "yarn build"
run command "yarn startall"
Go to browser and hit "http://localhost:3000/", here your can create your bot