There's several different data management tools available to use on the Salesforce platform. This lecture introduces you to the Data Import Wizard and the Data Loader. We cover various scenarios for mass transferring records, mass editing, mass uploading and more. We also discuss when you will want to use the Data Import Wizard and when the Data Loader is preferable.
NOTE: You can install the Data Loader by going to the Setup menu in your Salesforce org and searching for Data Loader.
Fortune 500 CSV - https://github.com/pssguy/fortune500/blob/master/fortune500.csv
Data Loader Guide - https://developer.salesforce.com/docs/atlas.en-us.dataLoader.meta/dataLoader/data_loader.htm