first you must study test theory,you can see the software testing,it is suitable for fresh man.
second you should know sth about basic sql scripts,testing tools.
third you can collect interview themes and summarize experience.
last you can look some websites for testing or developing,e.x. 51testing ,csdn,msdn etc.
if you want to froeign company, english is very important.
that's my advice, good luck to you!