Have you done any of the following steps? Take a look and let us know how far you’ve gotten.
1. Install MAMP
2. Make sure the document root in MAMP > Preferences > Apache is assigned to the folder you want to keep your site files in. For instance, my site files are all located at Documents > htdocs, but you can assign any folder you like to this.
3. Download WordPress and copy all files to your root folder from #2. You can place them in a subfolder to keep it clean and allow for additional site installs later, if you like.
4. Start Servers in MAMP
5. Create your database using MAMP. Select phpMyAdmin from the MAMP Start webpage. Under “Create new database”, enter in a database name such as “wordpress”, and press “Create.”
6. Open wp-config-sample.php and edit it, then save it as wp-config.php in the same location. Use the following:
database name: [you created this in #5]
database host/server: localhost
database user: root
database password: root
7. Go to your install page to finish up: https://localhost:8888/%5Byoursitefolder%5D/wp-login.php