How to upload data into Quotes from csv file using a new On-Demand instance?

I have 16,000 records that I want to import into the Quotes module in my new SugarCRM OnDemand instance. I am new to everything. One suggestion I have gotten is to use fgetcsv to upload the data. I have no clue how to code the php through the REST API to get the data into the module. I am open to suggestions, tutorials, a place to find the code, a mentor...Thanks in advance!