Hello Sajhaits,
I came across an app called Robinhood that tells commission free stock trade. Have anyone used it or do you recommend to use it?

Yes I have used it for more than year. It's great, I started using when it was launched. And Its FREE.

Yes, I've used it as well and it's a nice app.

Thanks! Does anyone have some general ideas on stock investing to share to someone starters like me? some Dos, Dont Dos etc.

Technically Robinhood is not free. There is a minuscule fee on all sell orders which is imposed by the US Securities & Exchange Commission. However, Robinhood does provide free stock buying options. There is a premium Robinhood 'Gold' account that also offers margins for added buying power and extended trading hours. Gold account monthly price depends on the tier you select.

Robinhood may not be suitable for Active Day Traders. No desktop trading platform. No short selling. Limited options in terms of securities. Lacks support for Mint [can't track your holdings outside]. Limited to individual taxable accounts.

I would recommend Robinhood if you are a casual mobile trader who loves to trade few stocks or ETFs per week. You may want to max out your tax-sheltered retirement accounts 401K/IRA before investing in Robinhood.

Would you help me a bit more details on ?
1) Limited to individual taxable accounts.
2) ETFs
3) tax-sheltered retirement accounts 401K/IRA before investing in Robinhood.