In order to prepare for B.ED exam you can refer to basic english books. 

Read newspapers daily it will help you to get aware of the latest happening in the world and you can also learn new words.

You should also be aware of the topics like history, culture, geography, economics and general policies.

The syllabus will be of graduation level for subjects - Mathematics, Physical Sciences (Physics and Chemistry), Biological Sciences (Botany and Zoology), Social Studies (Geography, History, Civics and Economics).

You can set your time-table to complete your course. Refer past year papers to understand the exam pattern and level off the exam.

To become a teacher it is very important that you should have good communication skills. You should also work on that.

Good Luck!!