I love finance, as weird as that sounds, it's like a game to me, especially money market accounts.
Money market funds are very safe, pretty much the same as a bank account, but it offers much more returns
Absolutely, that's where you put your money if you want to make money off it. I practice churning to bring in extra money by moving money around.
That is much better that putting it all in mutual funds, where fees and expenses can add up very quickly
Absolutely, that's like credit cards, people don't pay them on time and the interest gets them.
There is way to borrow money and have a rate of return that beats the interest you have to pay, but not with credit cards
Absolutely, the safest way to use credit is to open a business credit card, they are a separate line of credit from your own and cannot affect your credit good or bad.
Yes, because your credit is important for the future.  Banks do make calculations to figure out the risk of lending you money and then adjust your rate