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I gave this 4 stars and deducted one - Alan is a great teacher but why oh why use TRACKS as an example?
This is one of the worst things you can do to learn API - unless you know someone who can set up a VM using an image of tracks, you need install Ruby, Bundler, SQL Express (or SQL Lite) then if you are behind a proxy, create a bunch of connections strings to set your proxy creds to enable ruby to download gems. Then figure out why, even with proxy's configured - you can't download bundles. This is way too much "setup" just to learn API Testing. Alan, please - come up with a better example. I just spend three hours trying to get bundle to install on my system behind a corporate proxy. Gave up, put your book back on the shelf and opened postman,