@jalexander6 ,
Since you claim to know nothing about APIs, you may not be aware that you can specify SIS codes in many of the API calls. Object IDs, SIS IDs, and special IDs - Canvas LMS REST API Documentation
In particular, if a course has Canvas course ID = 1234 and a SIS Course ID = sp17-econ101, then you could fetch information about a course through the API using either of these formats
GET /api/v1/courses/1234
GET /api/v1/courses/sis_course_id:sp17-econ101
That doesn't work for everything, though.
Another option to pursue is the Provisioning Report or SIS Exports reports. You can find these under Admin > your account > Settings > Reports. They'll return the Canvas course ID as well as the SIS course ID, so you can grab the numbers from there and it's already in a spreadsheet, which is what you were asking for.