Tip 1 : Practice atleast(easy and medium questions from leetcode under(Top Interview Questions)) and all the questions from Gfg under(must to do coding questions for interviews))
Tip 2 : Don't learn each and every question you solved but try to solve question in a way that you can solve its variation during interviews
Tip 3 : Do one project(one is enough) which you can explain with full technical details (why you used this technology, and all logics you applied in implementation)

Tip 1 : Have at least one project which you have made yourself and you should know all the technical questions related to that project (I feel project domain hardly matters like web development or android or ML/AI)
Tip 2 : You should Put only those skills in resume :
1. Which the company requires (eg if you know company doesn't require Networking domain knowledge so 
don't include it unnecessary if you are not much confident in it)
2. For on campus internships resume shortlisting is very easy so don't add anything unnecessary which might cause you pain during interview.