The reason you are confused is because it is confusing. There are a lot of details, some you need to know others you really don't. The basic things I like to recommend to new users are:
1. Learn about the system before obtaining BTC. You can even download a "test net" wallet and get some free coins to practice. They are valueless, but work the same. A good read to start is the white paper by Satoshi. You can see the link below in my signature.
2. When you do want coins, don't screw around with faucets or free websites. Even if they aren't scams you will work hours to get pennies. Better to create an account at an exchange in your country. Fund the account then buy and withdraw the coins to your control. Good exchanges are automated in a way that protects sellers and buyers. Systems that use PayPal or the like are not safe to use with bitcoin.
3. Forget about "investing". Buying and holding is an investment, but it is a risky one. You will appreciate BTC more if you spend some and see the advantages for yourself. Certainly DO NOT INVEST BITCOIN IN SOMETHING ADVERTIZED HERE. Most are straight up scams. Bitcoin is money and attracts criminals. There are no sweet deals or legitimate ways to double your coins. If you simply MUST invest your coin then ONLY deal with a licensed business or your money will likely be stolen.
4. As a new user do not beg, borrow or lend. It will get you negative trust here and these are very risky deals. If you buy something from a person here definitely use escrow.
Anyway, welcome. And thanks for considering accepting payment in bitcoin for your business. You can do well right now by capturing demand for purchases in btc. I only use it for online shopping and am always on the lookout for new stores or services.
You might want to look into a payment processor like BitPay or CoinBase. These solid businesses handle the transaction and directly deposit into your bank account. The conversion is instantaneous and you avoid any exposure to price volitility. It is also cheep or free for your business, unlike the 3% fee for a credit card.
Cheers