where on the website can i take the rules profiency exam to play in national tournaments

Not there for next year yet. The new rules start in January but the first NT event isn't until early March.

So every year we have to re take a test?

Not there for next year yet. The new rules start in January but the first NT event isn't until early March.

Someone is a TD, and thus an official, in 2 days. I thought officials had to re-test with this year's rule changes, and you had to be a current official to TD.

Have I got that wrong? Or is there a grace period for the first few months?

Don't know. Sounds like you're an official by default until the new test is ready to take.

The Pdga will send the tests through email to td, when u are certified, it will last for three years..and if u play nt events u will have to take test should be in your email by feb..from what i was told from DG