The steps of downloading salt class from macbookair are as follows:

1. Visit the Salt Class official website on the macbookair:/;

2. Click "Download" in the upper right corner of the page to enter the download page;

3. Click "Apple Edition" and choose to download the MacOS version of salt classroom software according to the actual situation;

4. Click "OK" in the pop-up prompt box to start downloading the salt classroom software;

5. After downloading, double-click the salt classroom software to install it;

6. After the installation is completed, open the salt classroom software and log in according to the prompts to use the salt classroom software.