oh so like it, thank you. I'll see your blog and try to follow the tutorial that you provide.

What if I can not use openoffice? I have read something about a tutorial on your blog, but I do not understand it. whether it is still possible for me to use in this way? I am really a beginner.

You can't use the openoffice plugin and RML reports with V8. Its deprecated. So you'll need to create a new QWeb report really. Unless you'd want to create a deprecated report in Odoo with RML through code. You will need to do it all in a file though, you cant use the Office plugin. It has stopped working after V7.. So you'll really need to look into QWeb reporting! By the way, if the answer has helped you please consider upvoting/accepting it :)

is there a specific module should I install?

Nope none, reports are installed by default and can be found under the settings menu. If you want to do it by code you can find it in the module you'd like to use.

so if I already create custom reports it will automatically go to settings -> reports -> reports?

If you made the custom report through code, added it in a module and updated this module you will see them under reports yes!

I've tried a tutorial on http://www.odoo.yenthevg.com/creating-custom-reports-odoo-8/. I do step by step as the tutorial. but on the customer invoice is still not I find the invoice without prices. I also had to update the module. how to solve this?

Do you see the new print option in the dropdown where you print the invoice? Is it showing the second name? Does the print work and what does it print?

I've tried to look at the customer invoice -> print but does not show the second name. only invoice in the dropdown.

Then you've done something wrong (in the wrong module, wrong place, no update of module, haven't included the file in the init files, ..) Its hard for me to say what you did wrong though :s

I followed your tutorial on http://www.odoo.yenthevg.com/creating-custom-reports-odoo-8/ or is there something I need to do in addition to that of the tutorial?

Have you reloaded your module by either command? (./openerp-server -u sale or through settings > update module list > open up the sale app and click on update)

I've updated the settings -> module updates the list but still does not appear

Hmm then you did something wrong / missed something through code.. Have a second look and otherwise send me the module and I'll have a look when I have some time.

I think it's still too difficult for me. Can you give me an example of a more simple? so I can understand the first diagram of the manufacturing qweb. eg I want to print the customer master data. how to make? please help me