If you can fly with a Michelin road map then there's not a lot of point in asking on pprune
Just don't try it in the UK, when you get the CAA "interview" after busting some controlled airspace and causing some ATCO to tear all his hair out.
Yes the ONC charts are of limited use but I did say as much. They show airports, navaids, terrain elevations. One then needs to get hold of some up to date aviation data to fill in the details and unfortunately this costs money. I am happy to print off some stuff from my Flitestar if anybody wants it - PM me if that is of some use.