what exactly do I get taxed on with my stocks???

Brokers will often only show the proceeds from stock sales and this is all they need to report to the IRS. When you fill out your Schedule D, you will list the basis for your stock (actual cost plus fees) and subtract your proceeds from the sale. The difference, positive or negative, is then listed on your Schedule D. Your losses will be used to offset your gains. You may even have a loss for the year which will lower your taxable income. If your loss for the year is $3000 or more, you will claim up to $3,000 and carry over the remaining loss to future years.

your 1099 b reports 'proceeds' which means the price you sold the stock for

you need to find the original price and purchase date for each one you sold and calculate the gain or loss on each one and report on your sch D--you definitely don't want to have to pay taxes on the 'proceeds' for one thing it is not a true report of income earned

you need to keep files on your purchases and sales, you are investing your money, your broker is handling it for you and in most cases, most financial houses now are reporting the purchases along with other non reportable information

You pay taxes on the gains. Your 1099-B should show both the cost basis and net proceeds.

You file Schedule D to report your gains and/or losses.

You pay on the profit you made on the sale, and deduct the losses (up to $3000 ) for the year.

Taxed on dividends and capital gains (profit). Sale price is used to calculate profit. (Cost-sale price = profit/loss)

You'll need to file a Schedule D: http://www.irs.gov/pub/irs-pdf/f1040sd.pdf