Step 1 around line ~89 is where the guide starts
Setup your own VPN that can be used privately, by your family members in Iran or other restricted countries - at only around $5/month.
This sets up V2Ray with REALITY protocol on port 443, the most effective method to bypass Iran's DPI (Deep Packet Inspection) systems. REALITY makes your VPN traffic completely indistinguishable from legitimate HTTPS connections to real websites.