There are many exchanges given a opportunity to buy and sell crypto with Indian rupees and you have selecte best service providers as i mentioned below.
1 wazirx
2 zebpay
And more, be careful with scam exchanges.
I think very important for people who are new or with less experience to only use the reputed exchanges which have being existing before govt making it illegal or now after it has made it legal those exchanges are back. It would be highly risky for investing or trading in any unknown exchanges just based on some body's recommendations.