BITS HD is all about how quickly students can solve conceptual questions. The syllabus is very similar to GATE. Discussed below are some tips which will be helpful for your preparation.

Preparation Tips:

• You should not spend too much time on the problems you are not sure about. Instead, utilize the time on the questions you feel that you can do fast.
• If you are an ECE student, make sure you have a clear concept about all the subjects. 
• Go through the previous year's questions of GATE. 
• You should not underestimate paper 1 as it is quite scoring. There is no necessity to prepare the EE part.
• For paper one, do not leave any topic mentioned in the syllabus. Especially the surface integral, triple integral, and geometry of complex numbers prepare them very well. 
• For English, solving questions from slightly tough sources can be done because BITS HD is tougher than GATE. 

If any question is wrong or incomplete, you should avoid attempting it.