As a donor or a campaign owner, you should be aware of the different Contribution types.
There are 3 different manners in which you can opt to donate.
1. Anonymously: in this method as a donor your identity is kept secret.
2. Visible: Show your (or their) name and amount.
3. Identity-Only: Show your (or their) name, but hide the amount.
As a donor, you simply need to locate the donor campaign that you want to fund and click on the "Contribute Now" link and go through the checkout process. You will be asked the amount you want to fund. Select if you want your donor to know that you donated or you can go anonymous, and display your name and hide your amount funded. We have to limit $2000 from a single donor on a campaign.