why can't i see how much i am spending and can't take off my songs on my wish list

With iTunes open, from the menu bar top of your screen, click Store > Sign In

Then back to the menu bar, click Store > View my Account

You may be asked to re enter your password one more time.

In the next window click See All to the right of Purchase History.

Instructions for adding or removing items from your wish list. The same article you posted from > iTunes Store: How to use Wish List