Remember by heart the canadian CYYT, CYJT, CYYR, CYHZ, CYQX and afterthat Bermuda TXKF (take care to the night closing), US shoreline apt as like as KBGR, KBOS, KEWR, KJFK, KORF, KILM, KCHS down to KMIA or other carribeans like TAPA, TJSJ, MDSD.
As said, try to draw the circles
