Toefl is an American exam and IELTS is British/Australian. However, you can study in the US with IELTS or in Australia or the UK with Toefl.
Sites:
http://www.usingenglish.com/links/Examinations_and_Qualifications/IELTS/index.htmlhttp://www.usingenglish.com/links/Examinations_and_Qualifications/TOEFL/index.htmlWith all advanced exams, you need to know and understand the exam in great detail; simply having good English is not enough, so get hold of exam books and study them.
I can't say much about scholarships, to be honest, but if you are going to apply, take the application very seriously and make sure your application is perfect and conforms to every detail of the requirements. It is an incredibly competitive area; a friend of mine got a scholarship to study in Italy, but there were hundreds of applications for just one scholarship.