Hello,
There are varieties of government exams which you could give. You have nice thought regarding giving a government exams. You should try hard for Civil Services Examination conducted by U.P.S.C Indian Engineering Services.
And for preparation tips you have to follow certain steps and follow them till clearing it. You should know which are the best books and preparation material,
You should have a fixed routine which would definitely help you in exam perspective. Understand exam pattern and work accordingly. You should continuously revise the topics that you studied already and also previous year exam paper should be solved weekly. Read newspaper on daily basis to get updated on current affairs.
All the best!!
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