1. Click the New Lead button in the menu bar. Fill in whatever info you have on your prospect. Choose your settings. Click Create Lead.
2. Go to Leads → Lead Importer. From there you can upload a spreadsheet of leads, whether it's 10 or 10,000, in only a few minutes. Be sure to save your file to CSV format first.
Once uploaded the columns will be identified and you may choose the matching lead fields to fill in.
3. One other way to create leads is to have them auto-imported from a form on your website. See the article on POST importing for more information.