courses to become a Engineer

Hello,
After getting Diploma, if you cannot do BE/B.Tech regularly, then there is an option AMIE (distance education), it is degree course. The syllabus of AMIE is similar to B.E/B.Tech. The AMIE syllabus has two parts: - Section A and Section B (similar to First year, Second year etc. Of any formal degree course). Those who join for AMIE should first study and clear all subjects in Section A. Based on one's qualification, the total number of subjects in Section A varies. After passing Section A, he should study Section B. The total number of subjects in Section B is 9. Duration:
The duration of AMIE is flexible. A period of 6 years each is allowed for completing Section A and B. Since this is the maximum duration, a student who systematically studies the course can successfully finish the course in minimum time. Students who study the course under any of our coaching programme can complete the course in 4 semesters (Diploma holders) or 6 semesters (+2 holders). You can read more about AMIE Course Duration here. To know more:
https://www.amieindia.in/what-is-amie.php
Good luck.

First of all, I want to say that all programs of mechanical are the best. You have to find your interest. As per your question, I am listing out some branches of Mechanical Engineering, find your interest and get in-depth knowledge of it.
Acoustical Engineering-Concerns the manipulation and control of vibration, especially vibration isolation and the reduction of unwanted sounds.
Manufacturing engineering-Concerns dealing with different manufacturing practices and the research and development of systems, processes, machines, tools and equipment.
Thermal engineering-Concerns heating or cooling of processes, equipment, or enclosed environments.
Vehicle engineering (my favourite one )-The design, manufacture and operation of the systems and equipment that propel and control vehicles. Power plant engineering - Field of engineering that designs, construct and maintains different types of power plants. Serves as the prime mover to produce electricity.
Energy engineering- It is a broad field of engineering dealing with energy efficiency, energy services, facility management, plant engineering, environmental compliance and alternative energy technologies. CAD/CAE - is the broad usage of computer software to aid in engineering analysis tasks. It includes Finite Element Analysis (FEA), Computational Fluid Dynamics (CFD), Multibody dynamics (MBD), and optimization.
Mechatronics-Mechatronics is a multidisciplinary field of engineering that includes a combination of systems engineering, mechanical engineering, electrical engineering, telecommunications engineering, control engineering and computer engineering.