X-Men is a whole lot, so I get the over your head feeling.
The entirety of House of X and Powers of X will be collected and released in a
hardcover volume (in stores Dec 11!), and surely a normal softcover trade paperback down the line. The final issue of the 12 week HoXPoX story just came out today - it has set a great foundation for all kinds of stories to come.
Dawn of X is kind of the banner heading Marvel is using to frame the relaunch of the entire line of X-Men titles, including the Wolverine series you mentioned. The other titles in the relaunch are mentioned in
my post above, which highlights the covers for the #1 issue of each series.
Sorry the FanExpo store experience has been a bad one.