Welcome Ashish

There is a entire sub- forum on diabetes here. With many threads on different subjects. Look through these: http://forum.lowcarber.org/forumdisplay.php?f=45

But to start with the basics, use these links to short explanations and two simple Diet plans:

Diet Doctor: https://www.dietdoctor.com/type-2-diabetes
Dr Hallberg: https://youtu.be/da1vvigy5tQ
Dr Westman: https://www.dietdoctor.com/lchf-dia...dr-eric-westman

Duke Clinic Diet. https://www.dietdoctor.com/se/wp-co...starch_diet.pdf
Basic low carb diet ( in 40 languages ) https://www.dietdoctor.com/low-carb

If you are on medications, read caution at top of the first link.

Let us know what information will help you,