Money Market Investing
Money market investing simply involves opening a savings account that pays a better interest rate than a traditional savings account does.
However, the higher interest rates tend to come with a lot of restrictions. Including balance requirements and limiting the number of transactions, that are allowed, in any given month through the account to earn that higher interest rate.
In my opinion, you are better off with a high yield online savings account.
A high yield online savings account usually does not carry as many restrictions.