Degree

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.

Dear Krishna,
Let me answer your query in segments.
(#1) Firstly make a target college and the start preparation. Strategies could be different, if you are planning to do your PG from ISB Hyderabad or IIMS or Abroad, because all have different admission criteria.(#2) For skills; it's an indescribable topic. But, fundamentally, you need to have good communication skills, analytics skills, behavioral skills etc.
(#3) For gap, yes it's good to have but for those who are able to generate some value to their profile in this gap. Interviewer will not only ask about your year gap but also ask for the reason. If you have any managerial work experience then it's fantastic. It increase your chances of selection.