> b. One-Week
> c. One-Month
Yikes! I know it's fun, but you're never going to make money investing this way. Your daily/hourly buys and sells on scottrade will never beat the institutional investors.
Here's the obligatory mention of A Random Walk Down Wall Street  if you want to learn why.
TL;DR: Put your money in an index and keep it there _forever_. You'll make more money and retire sooner than your day-trader friends.