Welcome

You can do the zone quests together any way you please.

The main story is a single player story and you won't be able to play any of it together regardless of faction.
Same goes for parts of the guild stories.

Other than that, have fun questing. Some great stuff out there. And feel free to ask further questions as they arise.
Just tag @Jitterbug to make sure I see it on here

Dashiva_USA wrote: »

we want to just level up together but I don't want to be missing the main story for my race/faction.

Just one thing on this score. The game is level adjusted, so if you end up 10 levels above your wife (or the other way around), the main difference will be in the investment in skill progression. The person with the higher level will have more selection in terms of what is put in the 5 slots on the bar, and may have some more powerful morphs. This will not prevent you from traveling together. The level difference will not mean that the higher level player is "carrying" the other, especially with two accounts that have not reached Level 50.

Dashiva_USA wrote: »

My other question is, are there any good mods that people would recommend. I'd like to get all the XP I can from discovering places, skyshards, reading books etc. Is there any addon that will help with this?

There are add-ons that will tell you where Skyshards are, for skill point advancement, and where the Mage's Guild lore books are, for advancement there, as well as POI and quest locations.

The books you get from book shelves that increase skill lines are numerous, so stop at all bookshelves. I don't know if there are any add-ons that would tell you anything there.

I use the Skyshards one, but I admit that I found most of them before there was such a thing. Today, I use it to remind me about whether a particular character has found it, not where it is.

I do not use the lore books add-on because I prefer to happen across them, as intended. In general, I tend to stay away from add-ons that tell me where things are that are intended to be found during exploration. Lore books would make for a pretty cluttered map.

I used a questing add-on early in the game that would identify quest givers that my character had not been to. This was for the zone "Adventurer" achievements where it is necessary to get a certain number of quests in each zone. Finding the one missing quest in a couple of the zones caused early hair loss and frequent anger management classes . This add-on is out of date, now, but I don't need it. (No hair left )

I use Destinations, which reveals POI locations on the map. At this point I don't need to know where most these places are, and those that I don't know are more fun to find than to be told about, but it reminds me that I need to go to certain places on characters that are new to a zone, or may have only partially explored a zone. Destinations has filters that allow me to turn off stuff I don't want to be told about.

Hey there! You asked for a breakdown of questlines, so here we go!

• The Main Quest is a primarily solo-only questline given by the Prophet in the Harborage. Assuming you are Ebonheart Pact and your wife is Aldmeri Dominion, your Harborage will be near Davon's Watch in Stonefalls and hers will be near Vulkhel Guard in Auridon. You won't be able to do these quests together.
• Each alliance has a "home territory" of 5 main zones and one or two "starter islands". The Alliance Story (or "faction questline") leads you through these zones in a particular order. While the game will attempt to lead you through your home faction's questline first, there is nothing to stop you from travelling to another territory and completing a different faction questline.
  • Khenarthi's Roost is the starter island for the Aldmeri Dominion, so by travelling there, you will be able to complete the Aldmeri Dominion faction questline.
  • Assuming you have an Ebonheart Pact character, once you finish the Aldmeri Dominion storyline, I would recommend travelling to Bleakrock Isle, from where you can pick up the start of the Ebonheart Pact storyline.
• The Mages Guild and Fighters Guild both have their own questlines, and like the Main Quest, these are primarily solo-only.
• Each zone also has a number of side quests which do not form a part of the Alliance storyline through that zone. To find these quests, you'll have to go exploring, as you will not be led directly to them.

For a breakdown of the primary questlines, see This flow chart. For details on all the quests in the game, start here.

I haven't touched on questlines of Neutral zones or DLC content here, so don't hesitate to ask if you have any more questions!

After seeing the cluster fudge in the General Discussion forums, it's refreshing to see such helpful people here.

Kudos to all of you.