How to create a new report?

How to create a new report that fetches datas from more than one user defined doctypes??

Check this:

https://frappe.io/kb/reports/how-to-make-query-report

Thanks a lot… but i dont undrstand that queries?? please send me some queries used in erpnext as well… ill modify that to my application…

link not works please update the link

https://frappe.io/docs/user/en/guides/reports-and-printing