Make sure you check out the subpages under Tutorials. So far we have built out resources for learning how to use Google Classroom and Hangouts Meet.
For your Google Tools, the Teacher Center is a great place to start. It offers a variety of training modules, but a good place to start is to scroll down the page and browse the First Day trainings. You will see modules for Slides, Docs, Classroom, Forms, Expeditions, Jamboard, Hangouts, Sites, and Sheets.
There are also many courses that you can use to hone your skills. These courses have assessments and track your progress including a record of your work for PL documentation: Educator Level 1 Fundamentals, Educator Level 2 Advanced, Devices Training, Certified Trainer, Teach Coding with CS First, Teach Applied digital Skills, Digital Citizenship and Safety Course, Tools for Diverse Learners, and Support English Language Learners.