We just went all Macs in our house recently...and several posts ago someone mentioned using the PRINT function.

It works great...use the PRINT dialog box and at the bottom left is a box labeled "PDF"...click on it and you are presented several options...one of them is "SAVE AS PDF"...that is the one you need to use to save it and name it whatever you want.

Works great, lasts long time...

Good luck.