Costabile KB · Private Library

A quiet library
for building calm
and capable systems.

Personal guides on self-hosting, finance, AI, home lab experiments, and the systems that keep a house running smoothly. Written for reference, designed for focus.

01 — Collections

Seven curated shelves, growing all the time.

Each collection holds a set of focused guides. Start with one and wander as far as you need.

03 — Field notes

What's been on the bench this week.

Recent work from the home lab, recent deployments, and small experiments worth sharing.

Note 01

C and C++ for Arduino & ESP32: Practical Embedded Development

Learn the C/C++ foundations actually used in Arduino and ESP32 projects: compilation, memory, hardware I/O, timing, state machines, and s...

Read entry →
Note 02

Firefly III Complete Guide: Self-Hosted Personal Finance

A comprehensive guide to Firefly III — what it is, how to install it, key financial concepts, daily workflows, automation with rules, imp...

Read entry →
Note 03

Git & GitHub Practical Workflow: Make Changes Safely

A practical Git guide for tracking changes, using branches, reviewing diffs, recovering from mistakes, and publishing reliable work to Gi...

Read entry →