Call me old-fashioned or whatever, I still think teaching is a noble profession. Please set it in your mind that you wanna become a lecturer to share & impart knowledge to people and to nurture young minds. Don't simply enter the academic world just to earn money. From my observations, good lecturers are always those with the passion in their fields. If you don't have the passion to teach, later you'll lose momentum and get bored, probably becoming a half-assed lecturer afterwards .

For a start, you should study hard and get good results. Nowadays, universities are only accepting applicants to masters programs with at least 2nd class upper degrees (I think UM has just implemented this prerequisite, for fresh grads you can't register for masters programs if you get <3.00 cgpa. Other unis I dunno). Try to get a 1st class degree for your undergraduate studies then scout around for scholarships for masters/phd programs, during my final year I saw scholarships to Japan, Singapore, HK etc. being advertised at my school. So with good results, doors will open for you. Also be more active in your university, might help in your scholarship application.

Another path is by becoming a research assistant to a lecturer after you graduated. This way, you'll be doing masters by research. The lecturer will pay you accordingly; different lecturer will give different pay I think. Masters by research can be completed within 1.5 year. If your research is really good, you might apply to convert your masters project into phd.

Good luck.