“The Lord said to Moses,  Speak to the Israelites  and say to them: These are my appointed feasts, the appointed feasts of the Lord, which you are to proclaim as sacred assemblies. There are six days when you may work, but the seventh day is a Sabbath of rest, a day of sacred assembly. You are not to do any work; wherever you live, it is a Sabbath to the Lord.” 
Leviticus 23:1-3

Some of the studies did not get finished before Billye Jeane left us to be with the Lord.  I imagine she is working on getting someone down here to finish for her.
If there isn't a link then the study isn't finished.