Ive been wanting to play a dragonborn paladin for a year. could you help me create one I have the players handbook basic rules dms guide and monster manual/. 

What are your stats?

What weapon do you want to use? Pallys can be effective with anything, so sky is the limit.

Have you read over the oaths? Do any of them appeal to you, or seem like they would fit well with the character you have in mind?

Those are really the three big choices that can help people help you.

Also what level?

Paladins are all about Tanking and Damage per round with a nice mix of social and Control as a secondary boost.

Dragon born are Strong and charming with a breath weapon and resistance.  For a Paladin, which are usually about the up close and personal combat, I suggest a Line breath weapon, your choice of element.  This gives you a bit longer range (30 ') even before you get to spells.

Your choices of Sub class (from the PHB) are:

• Devotion = more religious focused - good against undead, etc.
• Ancients= most druidic.  Think animals and plants, and Fey
• Vengeance = more focused on combat

From a gameplay perspective, Oath of Devotion gives a few bonuses for fighting undead and fiends but is mostly unspecialized and tends to be reasonably good at everything.  Oath of the Ancients gives some focus on spellcasting and defensive abilities.  Oath of Vengeance is heavily focused on combat, especially against single targets.

Im level 1 or 3(sometimes my DM suggests playing at higher levels)  

I want the oath of vengeance. the dragonborn will probably have a background focused on abolishing darkness.

Thanks for the advice.

what weapons should i choose? 

That depends.  Which fighting style were you thinking of?  Do you want to go with a shield, or a two-handed weapon for extra power at the expense of defense?

As a dragonborn, your racial bonus to strength means you're probably not going to be too interested in a finesse build.  So to start with, pick up a one-handed weapon that deals 1d8 damage (it honestly doesn't matter to much which one you take, very few enemies you'd be expected to fight at first level have any modifiers for weapon damage types), or a two-handed weapon that deals 2d6 or 1d12.  Unless you want to head toward Pole Arm Mastery, you can ignore the halberd, glaive, and pike.

what are good weapons for two weapon fighting?

In my opinion it would be a long sword. It can be used as a two-handed weapon but also one-handed if you need some more defence! (1d10 for 2-handed, 1d8 for 1-handed)

For two weapon fighting you need the feat to make it work. Otherwise, they both have to be light weapons, like a pair of short swords is a common choice. If you take the dual wielded feat, then you can have two long swords or battle axes or whatever. 
Generally, two weapon fighting isn’t so great. There’s usually more interesting things to do with your bonus action, and there’s not a lot of added damage. 

And paladins don't get Two Weapon Fighting Style as an option when they learn a fighting style at 2nd level.

that is annoying

But it is worth it in my oppinion