To: alaoui
Hello, 
You can save your project following menu 
File using option 
Save As in AVS Video Editor, it will be possible to choose location of saved project.  In Edit>Settings>General, you can enable auto save for you projects. Find other details 
here. 
Please do not post offtop, if you have questions defferent from the discussed topic, please post in related topics or create new ones.  
Regards.