To be honest, in this scenario I would strongly recommend blocking all tags to do with your question until you have caught up with the TV series. I think this is just common sense.
I do think spoiler tags can be useful and if the community deems them vital so be it. But ultimately questions are often asked on this site where this is simply no way to answer without revealing huge parts of the story. As this is a Q and A site, not a forum, I think this is perfectly acceptable. We have people who ask questions about films that they have seen at premieres and which aren't even in the cinema for general screening yet! I think trying to protect all of these questions from spoilers would be far too much work.
I suppose my final note would be to have patience in some issues, concentrate on the show and save the questions for later. There are a large number of questions I've answered on this site where someone has asked a question after a season or two of a show that is explicitly explained and reasoned perhaps three or four seasons in. Again, there's no way to answer this without spoiling - but if the person just persisted with the show, they'd get the answer any way.
Ultimately, my view on this is that I'm happy to move to a spoiler-free zone if the community desires it, but I think it would be very to hard to moderate and maintain and thus, given the Q and A status of the site, it should be accepted that spoilers are out in the open here.