Hey there,
There are certain exams which you must give to make career in lectureship.
Some of the top most exams for that are UGC NET & CSIR NET.
UGC-NET stands for University Grant Commission- National Entrance Test. The exam is biannually held in June (3rd week) and December (3rd week). UGC-NET exam is essentially required for pursuing higher order research in University departments/Institutes of National Importance, etc. Those who qualify UGC-NET exam are awarded either a JRF or Lectureship on qualifying the NET exam.
UGC NET is conducted in various subjects of arts, commerce, management, science, etc.
CSIR NET is the part of UGC NET, which deals with the lectureship and research in science related subjects only.
You can start preparing for these exams based on your PG subject.
All the best!!