If you have trouble with the pronounciation of particular words, i just found something that could possibly help you.
Go to http://www.dict.cc/, type the word you are looking for in the search bar and press enter. Now, it will show the word and it's English translation in a table, with a speaker-sign next to each one. Click on it and you can hear the word you were looking for read out loud by a member of the dict.cc community.
There is also a Plugin for Google's Chrome browser, so that you can look up the words quicker.