http://www.ancestry.com/cs/HelpAndAdviceUS
is a link to the Learning Center with some useful how-tos.

There are videos and webinars.

What you can see from and do with an online tree on ancestry.com is somewhat limited. If you need/want more detail, and reporting capability, you will likely want to invest in a desktop genealogy program.

Note - I am not recommending any particular program, but Family Tree Maker is a compatible program, offered by the same organization. http://www.ancestry.com/cs/apps/products