Meena, first — yes, ₹500 SIP is completely real and it's not a gimmick. I started my first SIP with ₹500 back in 2017 and that habit alone changed how I think about money. The amount matters less than the habit you're building.
On the Groww vs Zerodha question — for a beginner at your stage, just go with Groww. It's cleaner, the fund selection is easier to navigate, and you don't need Zerodha's advanced features right now. Zerodha Coin is great but it's slightly more suited for people who are already comfortable with the demat account world. You can always switch later, your investments don't get stuck.
Now the most important thing people get wrong: they pick funds based on star ratings on apps or whatever's trending. Don't do that. For your first SIP, look at a simple index fund — either Nifty 50 index fund or a large cap index fund. On Groww you'll find options like UTI Nifty 50 Index Fund or Nippon India Index Fund Nifty 50 Plan. Both have very low expense ratios, usually around 0.2%, which means more of your money is actually working for you.
Here's the thing — with ₹500 a month, you're not going to retire rich quickly. But compounding is real. If you increase that SIP by even ₹200-300 every time you get an increment, in 5-6 years you'll be genuinely surprised. I've seen it happen.
For KYC, keep your Aadhaar and PAN ready. Groww's KYC takes maybe 10 minutes if your documents are in order. After that you link your savings account — any bank works, SBI is fine — and set up the auto-debit. Pick a date just after your salary credit, like 5th or 7th of the month, so the money goes before you spend it.
One thing to avoid: don't stop the SIP when markets fall. That's actually when the SIP works best, you're buying more units at lower prices. This is called rupee cost averaging and it's the whole point.
My recommendation: open Groww today, do KYC, start ₹500 in UTI Nifty 50 Index Fund. Set a reminder to increase it by ₹500 on your next salary hike. That's it. Don't overthink the fund selection at this stage.