Our first recommendation is to attempt to tape the first airing of every class. This allows additional airings as backups should something occur during the initial feed. Also, establish a rotation of tapes for each class you are taping. You could then start taping over your original tapes, so for week four you would re-use tape A and so on. This allows you to have 2 or 3 weeks worth of content available for review, but does not overburden you with a large number of tapes to store.
Consistency is the key to successfully taping classes.
This will depend on the number of children that will be using BJ HomeSat, as well as the number of classes you will be trying to tape. If you have more than one child, a second VCR will be helpful but is not required. Unless you are taping a large number of classes, you should not need to have a 2nd receiver. We do have them available, but we have found that most people are able to tape all their classes with just one receiver.