So I just started playing X-Wing Miniatures and I am working on a Rebel/ Resistance Build. I've picked up a few ships and I was looking for suggestions for Builds with the Ships I have and what I should buy next to better upgrade the ships I have.

Right now I have:

TFA Core Set

Original Core Set

Heroes of the Resistance

The Ghost

T-65 X-Wing Expansion

T-70 X-Wing Expansion

Rebel Aces

I feel like I have a decent amount to work with here, but I'm trying to decide how to pair up the cards I have with the ships/pilots I have. I was looking at building around Poe Dameron or Wedge Antilles since they are fairly skilled pilots but I've only played once and am still trying to get a hang of the game and pairings.

Any help would be much appreciated!

Looks like you got an awesome start! For now I would just get some games in with what you have. You have quit a few ships and lots of good upgrades with those packs. Be aware, you are probably gonna end up with every rebel expansion at some point. If you ever get bored of those ships I would recommend the following at some point:

-K-wing: my personal favorite. They have the slam action! Doing a 3 straight, then slamming into a 3 bank and dropping a conner net on someone never gets old! Comes with Twin laser turret which leads to my next recommendation...The Y-Wing

-Y-wing: A Gold squadron pilot with a twin laser turret for 24 points is just a beast!

-E-wing: Corran Horn, while very difficult to fly is one of the funnest pilots in the game. He can shoot twice! Make sure to slap on R2-D2 to keep him alive.

Also, I should point out that I think you are posting in the wrong spot. Try posting Here and you should get more responses:

https://community.fantasyflightgames.com/forum/222-x-wing/