Marketiva gives you 5$ real to start trading so you don't have to deposit and if you made profit from it you can cash out, this is why it's very good for beginners. Their platform is very easy to use and they have support during trading hours.

ENJOY

If you can you should try day trading with stocks first. It's much easier.
Learning to day trade stocks on average takes 3-5 years. If you get past the first year…. you have a fair chance of being consistently profitable in the next 2-4 years. It depends on how much you learn and practice "technical analysis" as well as trading money management (risk control). I'm always reading a new book or re-reading an old book on trading & trading psychology. The hours to learn day trading are brutal. If you can…. do swing trading first.

Forex is more dangerous. You can easily lose your account in the first month. Otherwise everything I said regarding day trading stocks applies (just much harder).

You will develop a passion for trading. Just know…. even though you're a day trader doesn't mean there's a set up for a trade every day.

And remember;
The only thing worse than being wrong about a trade…. is staying wrong.

Also, the majority of casual Forex investors tend to lose out either because they do sign up to a scam, or because they pour money into a live account while they're still trying to learn (or when they think they have more experience than they actually do).

Learn from a good Forex info site like BabyPips. You're probably not going to find much written in Tamil, so an online translator is probably your best bet for that.

You can of course always subscribe to a good signal package, such as one with JustPips, and let it help you make your real trades while you learn on the side with a practice account (eg. FXGame with Oanda).

Anecdotal evidence seems to indicate that at least 95% of "retail forex" customers lose (you can search the Web for various stats on this, for what that's worth).

Very few retail traders can open a "real" forex account that can trade against bank trading desks. Probably need $2,000,000 minimum or so to do that, plus be able to convince them that you're something big.

The "forex" accounts typically promoted on the Internet aren't the same — with those, you're actually trading against your own broker, who issues OTC securities to you. This puts you in the rather awkward position of being in diametric financial opposition to your broker.

See also this warning regarding forex trading (it's from the US perspective, but it probably applies globally to a large degree):