Getting Gigabit Networking on a Raspberry Pi 2, 3 and B+ | Jeff Geerling
Introduction to Raspberry Pi 3 - The Engineering Projects
Raspberry Pi3 WIFI Router Based on Linux piCore - Brezular's Blog
wifi - Does Pi3 Wi-Fi support 5 GHz and does it need an extra antenna? - Raspberry Pi Stack Exchange
Archimago's Musings: Update: Raspberry Pi 3 B+ "Touch" Streamer, JustBoom Digi HAT, 3.0A power supply... And did they mess up Coltrane's "Both Directions At Once" in hi-res!?
Raspberry Pi 3A+ network speed tested (WiFi 2.4GHz & 5GHz + USB Ethernet) : r/raspberry_pi