To see your user folder in the Finder sidebar open a Finder window. From the menu choose Finder > Preferences to open the Finder Preferences window. Under Favorites check your name (the user name you choose for yourself). Your username will show up in the Finder sidebar. You can also check Pictures to see to hopefully show the link to your iPhoto Library.
By default your iPhoto Library will be in your Pictures Folder unless you moved it.
This short video on YouTube explains it well: Display Missing Finder Sidebar / Icons - Mac OS X Mavericks - YouTube
If you still need help I would do to the Apple Support Communities at Welcome | Apple Support Communities since the Finder and iPhoto are both both Apple products.