Train with a weapon for a month to gain +2 to attack rolls and +1 to damage with that bonded weapon. All other weapons you try to use take a -2 to attack rolls. If you weren't proficient with the weapon before you are now proficient in that weapon.

Also by researching and finding the ritual required you can name the weapon and spend the 100g in material components to create a pocket dimension for this weapon. You can call it to/from the pocket dimension with a Bonus Action. If your DM chooses roll to determine if the weapon become sentient dependent on your class and arcane knowledge.