Can I apply for NET after B.Com to become a Lecturer???? What are the basic requirements to apply???

No, you can not apply for NET after B.Com, the basic requirements to apply for the National Eligibility Test is that the applicant should have completed post graduation. The eligibility conditions for the National Eligibility Test (NET) are as following:

Eligibility for NET:
The applicant should have secured minimum 55% marks in Master’s Degree from universities/institutions recognized by UGC.

Subjects of NET
Economics
Political Science
Philosophy
Psychology
Sociology
History
Anthropology
Commerce
Education
Social Work
Defence and Strategic Studies
Home Science
Public Administration
Population Studies
Odia
Punjabi
Sanskrit
Tamil
Telugu
Urdu
Arabic
English
Linguistics
Music
Management
Maithili
Bengali
Hindi
Kannada
Malayalam
Chinese
Dogri
Nepali
Manipuri
Assamese
Gujarati
Marathi
French
Spanish
Russian
Persian
Rajasthani
German
Japanese
Adult Education/ Continuing Education/ Andragogy/ Non Formal Education
Physical Education
Arab Culture and Islamic Studies
Indian Culture
Labour Welfare/Personnel Management/Industrial Relations/ Labour and Social Welfare/Human Resource Management
Law
Library and Information Science
Buddhist, Jaina, Gandhian and Peace Studies
Comparative Study of Religions
Mass Communication and Journalism
Performing Arts – Dance/Drama/Theatre
Museology & Conservation
Archaeology
Criminology
Tribal and Regional Language/Literature
Folk Literature
Comparative Literature
Sanskrit Traditional Subjects (including Jyotisha/Sidhanta Jyotisha/ Navya Vyakarna/ Vyakarna/ Mimamsa/ Navya Nyaya/ Sankhya Yoga/ Tulanatmaka Darsana/ Shukla Yajurveda/ Madhva Vedanta/ Dharma Sastra/ Sahitya/ Purana-itihasa/Agama/Advaita Vedanta)
Women Studies
Visual Arts (including Drawing & Painting/Sculpture/ Graphics/Applied Art/History of Art)
Geography
Social Medicine & Community Health
Forensic Science
Pali
Kashmiri
Konkani
Computer Science and Applications
Electronic Science
Environmental Sciences
International and Area Studies
Prakrit
Human Rights and Duties
Tourism Administration and Management
Bodo
Santali