You’re totally justified in your frustration, most people think about onboarding in terms of signing forms and getting added to a payroll database when really, it should take you from day 0 to 90 to the end of your tenure. In short, its about getting you up to speed.

Even when companies have an onboarding program, they often fail to relay the ​​tacit​​ information a new hire needs -- like the tech or third party software you describe. That's partially because tacit knowledge is hard to record and transfer, but its also a because no one thought to create a knowledge base or make it easy to transfer that knowledge.

If you're looking to improve the training, I would strongly suggest recording the way you use tools on a day to day basis. That way its not overwhelming if you have to explain or write everything down for a new hire. Using giphy/screenshots/videos is a more engaging strategy for demonstrating how to use an application. If you record processes every once in a while, pretty soon you'll have a compendium of your workflow or a living operations manual. While you could use a cloud storage platform for this, something like https://tasytt.com/, let's everyone collaborate and has features like account provisioning, analytics (for compliance), and more fluid access than Google Drive.