Hello guys, I'm new to bitcoin, so there are things that I misunderstand.
I have a big interest in bitcoin, in the future, I want to make money with and invest in bitcoin. So I really need your advice.
1) Which wallet should I choose to keep btc? There are so many choices so that confuse me. I know about Electrum, Blockchain, Coinbase,... Does it secure?
2) I need to make money by myself before I invest them, so how can I do to make some bitcoin?
Thanks for your help.

Well if you really are interested in Bitcoin, how much Bitcoin are you actually going to buy? And are you going to use that daily, monthly or just store it for a long time? If you are willing to spend money on a Bitcoin wallet, then you should probably buy a hardware wallet. It would also mean that you can use your Bitcoin daily or whenever you want. If you aren't willing to spend money, then you should stick with a software wallet like electrum which is probably the second most secure wallet. If you are only going to store a little bit of Bitcoin, then a online wallet like Coinbase will be perfectly fine.