Web Automation With Selenium Webdriver

I wanted to learn a bit about web automation and I began doing a project with selenium webdriver in java. Although the problems I'm having aren't usually java one they are too diverse. The problem rigth now is locating the dropdown element "My offers". I've tried with xpath and css but could find the right one.

/*
* The program opens the MagicCardMarket web, checks if I'm logged, if not it enters username and password, then it goes to My offers, it counts the number of rows and loops through them, in each row it stores the name of the card, the expansion, the language, the condition, if it's foil, signed, a playset or altered and it stores the card number. If it's a playset it multiplies the card number by four.
*
* Then it searches that card, selects the corresponding expansion, then it filters by the corresponding language and if it's foil, signed or altered, and checks the condition row until it finds a card with the same or equal condition (Mint, Near Mint, Excellent, Good, Light Played, Played, Poor), then stores the price, if it is a playset it divides the price by 4 and goes back to My offers and edits the price.
*/

package scripts;
import java.util.List;
import org.openqa.selenium.By;
import org.openqa.selenium.NoSuchElementException;

[Code]....