Hi Elsy,
was it really so hard to find information? I've often heard or read that Maven documentation was really poor in the past but by now there's quite a lot of information on the Maven homepage itself and there are tons of other articles etc.
But for your specific problem have a lookt at
Maven standard directory layout.
Here you can see the directory layout it expects for any project. You can still customize it but you save time and trouble just by following the Maven conventions. For web applications all the "web" specific part go to the "src/main/webapp" directory, that is HTMLs, JSPs and WEB-INF for example. I hope this helps solving your problem
For general information and examples about Maven
Sonatype is a very good source of information. As I said the Maven homepage and various other pages are really valuable, too.
Marco