Weblinks: ifs and wishes
You Tube Lesson on real and unreal conditional sentences in present, future and past: http://www.youtube.com/watch?v=h-Np7dmvw0U
YouTube Lesson on stepping back when the situation is unreal:http://www.youtube.com/watch?v=-vefS0B1DIY
Online Practice:
http://www.englishpage.com/conditional/conditionalintro.html
http://www.usingenglish.com/quizzes/118.html
http://esl.about.com/od/Conditional-Forms/a/Real-Unreal-Conditional-Form-Worksheets.htm
http://www.englishpage.com/conditional/presentconditional.html
http://www.studypage.net/quiz/153_04.htm
(if vs. unless) http://www.grammar-quizzes.com/9-7.html
(reported speech steps back) http://www.ego4u.com/en/cram-up/grammar/reported-speech