Some teachers will be offering live meetings with students. These will often be drop in tutorials, but may also include some live lessons.
Students will receive a notification of any scheduled Google Meets from their Google Classroom. These Meets will often also show up in the student's calendar
Students can access Google Meet by using the links in their Google Classroom. This will either open up in a web browser tab if using a PC/Mac/Chromebook or will prompt them to download the app for their mobile device.
To join a Meet, the link will have a 'Meet code' as part of this, pointing you to the correct Meet.