Need Advice

I'm new to the market and after a month of learning and back trading, I want to start with the real thing. There are a few things I want to ask: 1. I have read a lot about using tick by tick charts. Can someone who have used it share their thoughts on tick vs time based charts? I could only find Upstox who is providing tick charts for free, which leads to the second question. 2. Can I open multiple demat accounts and not use it? I have 1 demat with Zerodha which I use for my MFs. I am planning to open 2 now. One with upstox for their features and another with shoonya or dhan for actual trading. Will this make any complications for me in the future? Sorry, I am not yet well-educated in this.