Typing Test?

Hello: I took a typing test yesterday for a job and the first time I typed 37 wpm's with 5 errors. The next time I typed 34 wpm. Well needless to say, I didnt pass the test because they wanted 40 wpm. I have another test on June 13th at 8:30 am. I want to know can anyone refer me to a good typing booklet or site that can help e get my speed an accuracy up by then?Clerical test