I've recently decided to get more into comics, after I've read through quite a few Manga, more exactly I want to get into DC comics.

Now I'm not really willing to read through the last 70 years of Superman and Batman comics, but instead want to get into the most recent continuity.

I'm mainly interested in the big names like Batman, Superman, Green Lantern etc. (I'm open for suggestions though).
Now my questions are:
Is there any sort of tag I could look up for the recent continuity, or is there somebody knowledgable enough to direct me to an issue that would allow me to read on without being blindsided by every reference to past events?
Or should I wait for some reboots I've heard take place in the near future?

Are there big event comics that I have to pick up? Even if they are terrible? (I've heard that an even called Countdown is horrible, but massively important to the general storyline)

I'd also be thankful if you could direct me to an comparably inexpesnive online shop, since Switzerland isn't exactly big on comic books.

Thanks for helping in advance.