How do I add/adjust words in/to the keyboard dictionary on iOS? I want to add some common building names for my college campus to my keyboard dictionary, but in the General tab in Settings, I only see an option to reset the dictionary.

I tried typing the words, expecting to see a red squiggly underneath them and then an option to add the words to the dictionary, but only a suggested edit was there.

It added one of the buildings =, but only because it tried to auto-correct to something else but I corrected it and it added itself to the dict.

But other names that have no auto-correct don't get added.

Also, I want to adjust a word that was added by making it auto-correct to being capitalized. And I want to remove some of the autocorrects like correcting "te" to "the" instead of the preprogrammed "TE", etc.
Go to Setttings > General > Keyboard.
Tap Edit in the top right corner.
Tap Add New Shortcut. Type the word you wanted to add to the dictionary in the Phrase field. You can also optionally add a shortcut.
Add a shortcut with the Phrase TE and the shortcut te. This will auto-capitalise te to TE. It will also prevent it from auto-correcting to the.