src/ tree as the actual specification: start at the service provider (src/*ServiceProvider.php) to see what is bound into the container, then config/ and routes/ if present. That triad tells you more about day-to-day behaviour than the release notes do.composer require vendor/package:0.1.* rather than ^0.1. Under semver, anything below 1.0.0 may break in a minor bump, and with no migration notes published you want the upgrade to be a deliberate act.php artisan vendor:publish --provider="Vendor\Package\PackageServiceProvider" without a tag first to list the available groups, then publish selectively (--tag=config, --tag=migrations). Copying everything into your app on a first release creates files you will have to diff by hand later.new. If the package ships a manager or client class, inject it or app() it. Constructor new calls bypass any bindings, config merging, and test doubles the provider sets up, and they are the single most common reason a package "works in tinker, fails in a job."config/ and read it once. Move any package options out of inline literals and into a dedicated config file (or config/services.php for credential-style values). Read them through config() at resolution time, not in a class constant — otherwise config:cache in production will silently serve stale values.swap(), or a testing trait, use it; where it does not, bind a stub against its interface in setUp(). Assert on the calls you made rather than on internal state, so a refactor in 0.2.0 does not break your suite.App\Support\XClient) that your controllers and jobs talk to. When the package's API shifts, you change the wrapper and leave call sites untouched — this is the highest-leverage habit with any pre-1.0 dependency.php artisan route:list for collisions with your own prefixes; if it registers migrations, run migrate on a throwaway database first and inspect the schema before it touches staging.php artisan config:clear locally; in production remember that config:cache during deploy means a config change requires a redeploy, not just a file edit. The same applies to route:cache if the package registers routes with closures — those cannot be cached and will fail the deploy.composer.json extra.laravel.providers in the package; if you have dont-discover set in your app, you must register it manually in bootstrap/providers.php (Laravel 11+) or config/app.php. A "class not found" on a package class after install is almost always composer dump-autoload.php artisan about shows discovered packages; php artisan tinker plus app()->make(...) confirms bindings; Laravel Telescope's request and job watchers catch failures inside queued usage that never surface in HTTP logs. Add a Log::debug at your wrapper boundary rather than inside vendor code.Macroable traits), custom drivers via a manager's extend(), publishable views, and events the package dispatches. These are the supported ways to customise behaviour; subclassing vendor classes is not, and it breaks silently on upgrade.How can I help you explore Laravel packages today?