...Just replace td with lapp wherever mentioned )
Upload your PHP Files using the free FileZilla ftp client software, to this server called lapp.local and also connect to its postgresql db, using the free pgadmin gui client, from any PC on your LAN.
After the application / database is ready, you can access it using https://lapp.local from any LAN PC.
Backup the system regularly to avoid any issues.
These are covered in the video. Google Search helps in finding more about PHP development / troubleshooting.
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