As you want to get the list of some of the best and valuable tips to solve Aptitude, Technical and HR rounds so here is the information of the same for you:

To clear aptitude test, GD and Interview (both technical and HR) you must be prepared well for the process. You should practice a lot aptitude and GD. you have to give demo interview to do well in campus interview process.

To clear aptitude test practice aptitude a lot. You may practice from the book of R S agarwal which is very popular book for aptitude.

To clear GD round practice GD a lot. Improve your English communication skill. Try to appear in college GD competition or any other GD competition.

To clear interview round both technical and HR round you must be prepared well previously. To clear technical round you must have very good technical knowledge.