This is a good start:
Get a good uni general economics text.
Then get a financial markets text.
Then learn marcoeconomics.
This way you get value based investing, the various formulas of financial markets, and can understand how the broader economy works allowing you to avoid being rekt by some of the advice on this site.
Dick Diamond, "Trading as a Business".
Alexander Elder and Mark Douglas books are obligatory.
If you wanna get deep into it, read Al Brooks Trading series.
The basics of technical analysis can be found online.
General rule = Long term > Short term, trading actively generates costs, eats your motivation and energy + doesn't guarantee you become a millionaire, quite the opposite.
Spread your investments, at least to 12 different objects, 40 different investments is pretty much maximum amount of diffusion, over that you get minimal benefits on lowering risk (you are left with systemic risk).
Throw feelings out of the window. Selling when something is down by 5% is just panicking.
Make sure you know how much money you are willing to lose (so don't invest 100% of your assets, unless you are fine with lose those).
Unless you get real insider info (if you have it, you would know about it), don't trust anonymous tips on "You get 200% by investing in X!", that's not insider info just mere speculating.
Now obviously this posts gets shot down because /biz/ is filled with "traders" who makes millions each month in commission.
Without an education or training in trading you will just have to explore the internet and the books and it kind of just clicks what happens.
Learn ABOUT technical analysis, LEARN fundamental analysis (use this one). Learn about optimal financial ratios (which i think is covered in fundamentals)
Why I'd shoot it down is because, trader or no, I can tell you're one of those guys with a hard on for explaining how investing is better than trading.
To the point you're actively giving this guy advice about investing that he totally didn't ask for.
Be a little more subtle, Charles Schwab.