Add A Pedigree Chart
Let's face it: genetic genealogy needs GENEALOGY to be successful. There may be several things holding you back from adding your pedigree to your AncestryDNA account. The number one thing I hear is that you don't feel like you will be helpful as you don't know very much about your own family history. Let me reassure you: whatever you know is helpful. So let's start with what you know and build out from there.
Creating & Manage Trees
The first step is to login to your Ancestry.com account (you can create an manage trees even with a FREE account). Select the Create & Manage Trees item from the TREES menu at the top of your Ancestry.com account page.
Create a new tree
Choose the Create a new tree link.
If you already have a pedigree chart in a genealogy software program like RootsMagic or LegacyFamilyTree, you can export a Gedcom (the name they give genealogy files) and then just import it here.
add what you know
Using this screen just follow the prompts to begin adding what you already know about your family history.
If you want to get more fantastic tips on how to get started in your family history, I highly recommend Lisa Louise Cooke's website: https://lisalouisecooke.com/beginning-genealogy/.