How hard is it to get started up in putting your horse in horse shows? Does it cost a lot or is it a lot of trouble?

Costs (as I mentioned in the other thread) depend on alot of things. Just starting out you can attend small schooling or fun shows which cost less and are less strict and fussy to a degree. Depending on how less fussy they can be as simple as wearing whatever you'd like to simpler show clothes, less polish on your horse and probably a closer drive.

Oops! Sorry for not checking closer on that! But thanks for telling me anyways and being nice about it! :) I'm going to go search it out online here in a few minutes.