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Tip 1 : Prepare for Aptitude Questions well since most companies have aptitude questions in the screening round. So you can proceed with further rounds only when you are well versed with Aptitude
Tip 2 : Be good with at least one programming language. Does not matter which language it is. It can be Java, C, C++, Python or any other language. Most of the coding rounds will be on websites which support multiple programming languages. Java and C are the languages which will be supported everywhere.
Tip 3 : Be prepared with at least the basics of various subjects. For CS students, these subjects could be Operating System, OOPS, Data Structures and Algorithms. Most of the interviewers will check if your basics are clear. Advanced topics are required only for few companies.
Tip 4 : If you don't know the answer to a particular question, then be honest and let me know that you are not aware of that topic instead of making something up. Most of the interviewers have 10+ years of experience and they can easily make out if you know a topic or are just making something up.
Tip 5 : If you have completed an internship, then probably your interview would be about your experience and the projects done at the internship. Be sure to state your experience and your contributions clearly.
Tip 6 : Projects are an important topic for the interview. Before the interviews, revise the projects you had completed or are working on currently. The projects need not be some external projects. These can be academic and final year projects. Make sure you know everything about the project.

Tip 1 : For freshers, always put the Education section before the Experience/Internship section and mention the educational details in reverse chronological order starting with the most recent college/university. No need to mention SSC and HSC. If you are an undergrad student, only mention the undergrad college. 
Tip 2 : Always showcase 2-3 projects. The first being the final year project (could be in-progress at the time of the interview) and others can be academic profile.
Tip 3 : Mention your LinkedIn Profile, GitHub profile (For CS students), your blog URL (if you have one) and other portfolio links (relevant to your course of study)
Tip 4 : Skip the objective section. This section is usually not required since you are directly applying for that specific company.
Tip 5 : ALWAYS PROOFREAD YOUR RESUME. Make sure that your resume does not contain any spelling or grammatical errors.