After episode 1 mainly delivering a recapitulation and exposition for the things to come (with two surprises - Dorne and Melisandre), episode 2 will certainly move things ahead fast.
HBO just released a preview for episode 2; if we put that together with the hints and images we already had, this is what I'd suspect to see next week.
EDIT 1: Now also the description for episode 2 has been published:
(Isaac Hempstead Wright) trains with the Three-Eyed Raven (Max von
Sydow). In King’s Landing, Jaime (Nikolaj Coster-Waldau) advises Tommen
(Dean-Charles Chapman). Tyrion (Peter Dinklage) demands good news, but
has to make his own. At Castle Black, the Night’s Watch stands behind
Thorne (Owen Teale). Ramsay Bolton (Iwan Rheon) proposes a plan, and
Balon Greyjoy (Patrick Malahide) entertains other proposals."
2: Obviously a very detailed description of the Winterfell vision from
episode 2 has been leaked. Not more content of episode 2, but Bran's
vision laid out in a very detailled way. So ONLY follow the link
to the following YouTube video if you REALLY want to get spoiled about
that part. And it definitively helps to understand Spanish... ;-) : Video
Lots of things to look forward to!