I know that feeling Steve!

But seriously, the best way to get a feel for glass is to look at as many different types as you can. Handle it, read about it, even if you don't retain all the information you get a better idea of what's what. Then decide what you want to narrow your interest down to if you want to - I did that and am now mainly focusing on glass trinket sets from anywhere - but all the other stuff I've handled and looked at has helped enormously, along with all the great info and advice from those here on the board who know (and will always know) so much more than I do.
I think that Polish pressed glass is going to be a very interesting area to look at if we can only find the information about it.