Hey!!

If you are looking for b tech coaching online, you can search for the required teachers of different subjects online through many websites like- urbanpro, tutorsite, tutor bureau, superprof or you can go through the video lectures on various youtube channels like- learn engineering, khan academy, lets make engineering simple, npetl, easy engineering, b tech bro and online video lectures on b.tech guru, wizIQ.

Hope this helps...

All the best!!!