[Tango-L] Learning through DVDs

[estamos danzando]

I would like to know your opinion about learning tango through DVDs in the
begining. I have not so much time to go to classes but I don't want to take
a wrong step.

Today I have seen some DVDs of dancevision on ebay at good price and I would
like to buy one of them to work with but I don't know which one of the
series of  is the best to begin.

Any sugestions? Should I buy the DVDs? Which one is good for take the first
steps?

Thanks