what it means?thank you for your help?
I want to know the meanings of 'sit your exams' and ' top tip'.
the two phrases comes from the passage below.

"It will soon be time to sit your exams - but before you do, it's important to revise.
Watch this video to pick up six top tips for revising - and then test your understanding in our quiz."

please tell me the answer if you know. thank you for your help.

Question

what it means?thank you for your help?
I want to know the meanings of 'sit your exams' and ' top tip'.
the two phrases comes from the passage below.

"It will soon be time to sit your exams - but before you do, it's important to revise.
Watch this video to pick up six top tips for revising - and then test your understanding in our quiz."

please tell me the answer if you know. thank you for your help.

Answer

What do these mean? Thank-you for your help.

To sit your exams = to take your exams/ to have your exams. (The examinations which happen at the end of your course of study).
Top tip. A tip is a piece of advice which will help you. A top tip is, supposedly, the best advice you can be given.