Jennifer, the best thing you can do now is to upgrade to the FamilyMember level (completely free). Once you have upgraded and completed the information to be a full WikiTree member, you can begin adding your family or adding to your family who already have profiles here. As you add your ancestors your DNA information will automatically appear on their profiles - sometimes it takes about 24 hours for that to happen.
Thanks for joining us and asking your question here in the forum!