I am pursuing B.Tech (1st year) from mechanical branch. Which books should I prefer for good understanding?

Hi Rajneesh, There is no single book which is best. There are actually quite a few books since every subject has/have special book/s. Below is the list of famous books. Thermodynamics- Cengel n Boles/P K Nag Machine design- Shigley/ VB Bhanadari Som- Beer n Johnston (The best one. Don't read Popov