What's a good way to solder a tiny microchip to a circuit board with nothing but a soldering iron and a magnifying glass? - Quora
SMT Troubleshooting (SMT / SMD Problem and Solution) - Guide
Soldering a TSSOP chip by hand » JeeLabs
The "Slap Method" for Through-Hole Rework - SparkFun Electronics
Amazon.com: Raspberry Pi Pico with Pre-Soldered Header Microcontroller Mini Development Board Based on Raspberry Pi RP2040 Chip,Dual-Core ARM Cortex M0+ Processor, Flexible Clock Running up to 133 MHz : Electronics