MetaMask is browser extension, so you have to use Google Chrome for it.
Open this link in Google Chrome
Click on ADD TO CHROME button
Agree to add MetaMask to your Google Chrome browser
In the upper right corner click on the Fox icon, read “Privacy Notice” and Accept it
Create the password, not less than 8 characters
You’ll see the block with words.
Save it, you’ll need for identification
You successfully created your wallet!
Choose settings of Account 1, copy and save the address of your ethereum wallet .