Test preparation

Go for specialised short term trainings in the branch you are persuing ur diploma its relavant technology so that it will give weightage to ur resume. Go for live url training.

Firstly note those chapters in which u r weak. And also note the remaining chapters thus covering all chapters subject wise in a book. And start revising chapter wise starting with the tough ones and strike of those which u hav already completed and go on making a fresh list of those which u hav to do. Thus u can complete everything. All the best

You can go through various YouTube channels who publish their demo show reels. You can also watch Sir Michael Caine's master acting class video.

You are eligible to appear for Civil Services exam after BCA.

Good choice. It's nice to see that you have a clear cut path decided for yourself. This is a very good attitude. Just keep it up and keep at it. All the best