You have not communicated anything as to what information you are looking for here.

Bikes fell to your possession and you are asking about what to do with them?

Bikes thinking about purchasing?

Bikes wanting to get rid of?

Their instrinsic value is nil. Many readers would not wish to bother with them. If your aim is to learn about doing bicycle work they would be a perfectly fine place to begin. No shortage of knowledgeable advisors here at the forum.