Teaching Abroad in Costa Rica - HELP!

Hello all,

I have a few questions. But first, thank you so much for taking the time to read my post!

1. I am currently a Spanish teacher in the USA planning to get a TEFL Certificate online via ITTT. Questions about this:
a. Will I be able to teach in Costa Rica with simply an online TEFL certificate?
b. Has anyone ever done this program - is the job assistance that they talk about actually real?

2. If I want to teach abroad in Costa Rica...can I land a job there before actually going there? If so, how? I have tried searching different forums for Teaching English jobs in Costa Rica and cannot seem to have any luck. Do you recommend I simply head off into the country and attempt to find a job once there? If I can find a job from here in the comfort of my own home...how long would you believe that to take?

Any and all advice about this process would be helpful!

Thank you!!!