this website was very useful in explaining the similarities and differences between nucleoli and ribosomes. I learned more than I thought i would on that website alone.
Has pretty good information about the topic's you want to look up. The downfall is people can change the information if they want to. On this sight there are pictures of the things you are looking for.
What they have in common:
They are both part of the "endomembrane system" and they are made up of phosholipid bilayer membrane.
How they differ:
The Endoplasmic Reticulum is bound with ribosmes, but the golgi body is not.
In this sight they have people ask questions about all kinds of topics and other people answer to the best of there ability. It normally answers the questions correctly.