The flowers turned brown after having it in my home two months. Did I kill it?
No, the flower has just reached the end of its life. If the leaves are still green and healthy, you are doing a good job.
You can remove the flower after it turns completely brown. Bromeliads only flower once in their lives, but the foliage will still look nice for a while, and you can reproduce the plant if it develops any "pups":
https://www.gardeningknowhow.com/houseplants/bromeliad/getting-bromeliads-to-bloom.htm
My bromeliad seems to be too big for the pot and is growing sideways. Can I transplant to a bigger, rounder pot?
Absolutely you can transplant it, and when you do, this is your chance to straighten it out. You may have a "child" plant or two beginning to form, which could be the reason your Bromeliad is "leaning." Be sure to leave the child plants attached if you have any -- they're not large enough to cut off of the mother plant yet.
This article provides some good information on the proper soil mix and other good tips for when you transplant your Bromeliad:
https://www.gardeningknowhow.com/houseplants/bromeliad/growing-bromeliad-plants.htm
My flower on my bromeliad is very dry. Is the plant dying or can I bring it back? It is an indoor plant.
The flower is probably nearing the end of its lifespan. Since bromeliads flower only once, yur plant will likely live for just another year or so. But you may be able to propagate it using pups that grow on your plant, as these articles describe:
https://www.gardeningknowhow.com/houseplants/bromeliad/growing-bromeliad-plants.htm
http://edis.ifas.ufl.edu/ep337
Can I divide mature bromeliad plants (baby has grown to adult)?
Yes, you can divide your bromeliad. The new plant should do just fine.
My bromeliad plant has a tall exotic bloom. It is now dying but the leaves are still green. Should I prune it? Will it come back next year? It had a purple bloom on it this year.
Yes, when the bloom begins to wilt and look unattractive, you can prune it off. Each bromeliad plant blooms only once in its life, but watch for pups, or baby bromeliads, that may grow on the parent plant. They can be separated and will eventually bloom, as described in this article:
https://www.gardeningknowhow.com/houseplants/bromeliad/growing-bromeliad-plants.htm
Do you cut the flower off when it dies?
Yes, you should cut off the dead flower.
A bromeliad only blooms once in its life, but you can still use yours as a foliage plant. If you want more flowers, the small plant growing next to the parent plant in the photo, and any other offsets or "pups" you find, can be transplanted and nurtured to produce their own flowers:
https://www.gardeningknowhow.com/houseplants/bromeliad/getting-bromeliads-to-bloom.htm
Will bromeliads grow in an outside garden in full sun, or should I restrict them to shaded areas?
Some species of bromeliad can grow outdoors in full sun, while others will be happier in shade. Please see this article for a list:
http://fcbs.org/articles/full-sun-bromeliads.htm