1. Pop over to: https://todoist.com/ and sign up for a new (free) account.
2. Now make sure you are logged into this account, and copy this link into your browser
3. You are now going to copy and paste 2 codes in.
4. The first code to enter for 1 free month is: 1MillionTasks
5. Now go back to the page
6. Next, enter the 3 month code in:
At this point, you now should have 4 months of Premium for free 🙂