Know that you are not alone. Life is confusing enough, but if you add onto that the many emotions and concerns that a dispute will bring, many people are confused.
The mediator is there to help you consider information and offers you may receive during the mediation. They are not there to judge anyone and good mediators genuinely want to help people achieve the right solution for them.
If you are confused about the process or about the details of an offer then make sure you speak up and ask. This may mean asking the other side to clarify something or it may mean asking the mediator for help. Mediation is a wonderful process, but it does mean that the parties (as well as the mediator) have to work hard to achieve a settlement. So speak up and ask for help!