What a productive episode:

  Lyanna Stark has entered the Game of Thrones!
  Bran is back!
  Wun Wun Smash
  Mountain Smash
  Davos unsheaths his sword
  Olly in a cell
  Tyrion plays Dungeons and Dragons
  Roose, Wanda and Baby Bolton get to hear Ramsay say "I am Lord Bolton"
  Balon Greyjoy flies
  Melisandre has one job
  Jon Snow declares that it's a Snow day
  and most importantly, Hodor! (Wyllis) 

Reddit discussion:

https://reddit.com/r/gameofthrones/comments/4hdflw/s6e2_postpremiere_discussion_s6e2_home/

https://reddit.com/r/gameofthrones/comments/4hd212/s6e2_live_premiere_discussion_s6e2_home/

tl ; dw : http://imgur.com/a/hZJse

https://reddit.com/r/gameofthrones/comments/4hk3w7/main_spoilers_tldw_season_6_episode_2_rhllor/

Lyanna and House Stark!

https://reddit.com/r/gameofthrones/comments/4hjd7v/everythinghouse_stark/

Theory about Hodor and Lyanna's horse:

https://reddit.com/r/gameofthrones/comments/4hnwpz/everything_theory_about_lyannas_horse/

Lyanna and Arya have a lot in common.

https://reddit.com/r/gameofthrones/comments/4hkqs5/everything_lyanna_and_arya/

AV Club:

“It is beautiful beneath the sea; but if you stay too long, you’ll drown.” 

I imagine many reviews will pull this line out from “Home,” and with good reason: Max Von Sydow’s debut as the Three-Eyed Raven brings flashbacks that both connect Bran to his family’s past and help the show connect with the deep history behind this story. The opening scene is also the first place where the idea of “home” emerges in an episode that is never particularly subtle about its interest in the topic, with Theon later echoing Bran in emphasizing the value in the episode’s title by saying it directly.

Source: http://www.avclub.com/tvclub/game-thrones-invites-kingsmoot-fever-sweep-globe-e-236099

Much explanation. Thank you Alt Shift X!

Ramsay knows exactly what he's doing. 

https://reddit.com/r/gameofthrones/comments/4hxz9n/s6e2_the_real_reason_ramsy_hugged_roose/

Poor Rickon and Osha. 

https://reddit.com/r/gameofthrones/comments/4htm1b/everything_im_scared_of_what_the_next_episode/

Followup for non readers:

http://www.adventuresinpoortaste.com/2016/05/04/followup-for-non-readers-home/

https://reddit.com/r/gameofthrones/comments/4hvheq/everything_followup_for_nonreaders_home/

Let It Snow!

https://reddit.com/r/gameofthrones/comments/4hddgu/everything_we_did_it_reddit/

https://reddit.com/r/gameofthrones/comments/4hddl4/everything_final_scene/

https://reddit.com/r/gameofthrones/comments/4hddv9/everything_yes/

https://reddit.com/r/gameofthrones/comments/4hdfbn/everything_i_feel_like_this_is_more_relevant_now/

https://reddit.com/r/gameofthrones/comments/4hhy31/main_spoilers_kit_haringtons_message_to_everyone/

Happy now? ~Carice van Houten

https://reddit.com/r/gameofthrones/comments/4hjera/everything_carice_van_houten_on_twitter/

Bran is back!

https://reddit.com/r/gameofthrones/comments/4hdpkl/everything_what_i_thought_during_this_scene/

Wun Wun smash!

https://reddit.com/r/gameofthrones/comments/4hde1k/s6e2_instant_regret/

What is Edd may never die. 

https://reddit.com/r/gameofthrones/comments/4hhtbo/everything_this_man_is_not_enough_appreciated/

Mountain Smash gif: http://i.imgur.com/3CfKI5V.gifv

Thank you turab1996 for making this gif:

https://reddit.com/r/gameofthrones/comments/4hdin0/main_spoilershead_smash_gif_for_the_people/

matt01ss mountain smash downvote gif: http://i.imgur.com/zhqKHph.gifv

https://reddit.com/r/gameofthrones/comments/4hf9tu/main_spoilers_heres_your_s6e2_downvote_gif/

I thought this line sounded familiar:

"Shield up or I'll ring your head like a bell."

https://reddit.com/r/gameofthrones/comments/4hdf97/s6e2_sound_familiar/

Next week: Arthur Dayne and the Sword of the Morning!

https://reddit.com/r/gameofthrones/comments/4hdesg/everything_game_of_thrones_season_6_episode_3/

Also: Is Tyrion a Targ?

https://reddit.com/r/gameofthrones/comments/4hds4j/everything_why_is_no_one_is_talking_about_tyrions/

"Don't eat the help!"

https://reddit.com/r/gameofthrones/comments/4hlxcm/everything_it_could_be_little_like_me/

"That's what I do. I drink and I know things."

Inside this episode:

https://reddit.com/r/gameofthrones/comments/4hdfrc/s6_game_of_thrones_season_6_inside_the_episode_2/

Ramsay Bolton be all...

What's going on with Jon Snow?

http://pandawhale.com/post/71740/game-of-thrones-s6e2-home-jon-snows-not-necessarily-well-also-what-melisandre-learned-from-thoros-of-myr-and-beric-dondarrian

600+ Reddit comments:

https://reddit.com/r/gameofthrones/comments/4h34tf/main_spoilers_a_scene_from_the_season_6_premiere/