The technology giant confirmed the redundancies hours after it told staff in an email sent in error.
The online lessons give advice on things such as how to prompt chatbots or complete admin tasks.
Mark Zuckerberg’s spending plans hint at further layoffs and changes within Facebook, Instagram and WhatsApp.
Multi-billionaire Elon Musk’s electric car maker also said its annual revenue had fallen for the first time.
Waymo has laid out plans for a robotaxi service in London with a pilot scheme due to begin in April.
The ASA upheld complaints that Coinbase’s adverts trivialised the risks of investing in cryptocurrency.
The company’s revenue was boosted by iPhone sales, but sales of its wearable tech and Mac computers dipped.
The firm wants to create a network of “orbital data centres” to power artificial intelligence.
Railway operators have new options for electric trains including getting rid of locomotives altogether.