With Email Invite
Step 1 – Open the Zoom meeting invitation in your mailbox
You'll receive an email invitation when you're invited to a Zoom meeting. Find and click the invitation email in your mailbox.

Step 2 – Click the invitation link in the email
If you have already downloaded Zoom to your computer, this will automatically connect you to the meeting. If this is the case; go to step 6.
If this is your first time using Zoom, read on to learn how to download the necessary software to your computer.
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On some invites, you can find the link to join next to "Join from PC, Mac, Linux, iOS or Android" in the email's body text. This will open the Zoom website.

Step 3 – Click on "download here" if a download doesn't start automatically
Step 4 – Double click the downloaded file to install Zoom.
This will open the contents of the "zoomuslauncher.zip" file.

Step 5 – Reopen your email and click on the meeting link again.
This should automatically connect you to the meeting.
Step 6 – Click the green Join Audio Conference by Computer button.
This button should automatically appear once you join the meeting. It will connect you to the meeting with your microphone.

Step 7 – Click the Start Video button on the bottom-left (optional).
This button looks like a video camera icon in the lower-left corner of the meeting window. It will allow the other participants to view your computer's camera.
Connecting via Zoom website
Step 1 – Open the Zoom website in your internet browser.
Type https://zoom.us into your browser's address bar, and hit ↵ Enter or ⏎ Return on your keyboard.

Step 2 – Click the JOIN A MEETING button on the top-right.
You can find it near the blue SIGN UP, IT'S FREEbutton in the upper-right corner of the page.

Step 3 – Enter the meeting ID or link into the text field
You can get the meeting ID or link from the meeting's host.

Step 4 – Click the blue Join button
This will find your meeting from your meeting ID or link, and connect you here.

Step 5 – Enter your display name for the meeting.
Click the Your Namefield, and enter a name here. You will connect to the meeting with the name you enter here.
Step 6 – Click the blue Join button.
This will connect your audio to the meeting, and open the meeting screen in a new tab. You can now use your microphone, and start talking with your colleagues in the meeting.

Step 7 – Click the Start Video button on the bottom-left.
This button looks like a video camera icon in the lower-left corner of your screen. It will turn your camera on, and allow the other participants to view your video.