You can find thousands of opened data entry projects in online freelancing websites. If you already know about freelancing websites, just visit any of your favorite freelancing websites and apply for the job, but if you don't know how to get job, let me tell you the process.
How to Get Online Data Entry Jobs - There are thousands of online freelancing websites on the web but only some of those contains high paying online freelance projects such as online data entry , blog writing jobs, logo designing etc. You can join any of those sites to find your suitable online data entry jobs. All of those sites offers free jobs. After applying( bid ) for the job or project , you will be informed by jobs provider if your bid is selected. If your bid is not selected by the job provider, don't worry and start bidding on others suitable project.
Payment Method - Almost all of popular freelancing websites pay via PayPal so you must have an account in PayPal. You can create your free PayPal accounts within few minutes, Although they also offer other payment method such as check, bank transfer etc but I think PayPal is the easiest way of receiving earnings.
I hope you will get your interested online or offline data entry jobs without any investment through the freelancing websites.