Participating by submitting name your e-mail address will result in a single entry.
Every additional registration through your referral link will increase your entry by 1. You'll receive your personal link after registration to check the amount of entries you have.
The more entries you generate, the higher the probability of winning as you'll have more weight in the overall set.
In a set of 1000 entries in total your default chance by having a single entry is 1/1000 so 0.1%. If, out of the 1000 entries, you've generated 5, its 5/1000 so 0.5%. 10 entries would be 1%, etc.
Note: Fake names and multiple entries won't be eligible to win the price.