Just run through the DLCs. Helps you to teach some other game mechanics as well
About Torgue, you can usually find orange weapons (one of the rarest tiers) in vendors. These weapons are bought with a currency called “Torgue tokens” which some enemies and bosses drop. You can find them a lot in a mission called “Bar Room Brawl”, which is repeatable. Also, the missions are usually paid with Torgue tokens.
The DLC order is something like:
4.- Tiny Tina
At the end of the playthrough, usually Head Hunter packs (1-2 quest short DLC, there are 5) are done. Then, you run TVHM (playthrough 2) without DLC and finally, UVHM (playthough 3) with everything. Be cautious that in the 3rd playthrough, Krieg gets the second skill tree cap at lv57 and then, you can decide to go Hellborn or Bloodlust.