this was given to me by the person and I cannot find how to find the tree she told me to look at
FamilySearch Family Tree is different to most other genealogical programs in that it only has one global tree. The ideas is that we are all collaborating one one global tree rather than adding and maintaining our own tree. We all work on the same data in the one tree.
If you know the ID of an individual in the tree you can use the RECENTS tab (up to the top of the screen) to go to the ID. Ask your friend for the ID that you should look at. If you don't know the ID but know the name and dates you can use the FIND tab.
These articles may be useful to you
Having said that, there is a place for people to submit a GEDCOM of their family tree which a person has on another program. If your friend has submited a GEDCOM then use SEARCH then Genealogies to just search through these submitted family trees.
This article will help
This article explains more about how FamilySearch Family Tree is one global tree
I hope this helps. If you need further clarification please let us know.
Just maybe you are referring to a tree at Free Family Trees • FamilySearch. These do not form part of "Family Tree" and have been added by users in a knowledge they cannot be edited. By entering a name (or names) of individuals you know would be included in such a tree, it should not be too difficult to locate.
Just tried this myself and although it didn't "like" the middle name entered for my ancestor (produced a "No results found" page) I was presented fairly quickly with three pedigrees (including mine) that had been added for him in the Genealogies section.