Take the milega to the airport and add a little bit for approach, e.g. 10nm, so multiply by three then you should have the altitude you should be(ok, be aware to add some elevation).
The TD symbol is quit nice for descend, sometimes theres a SLP or an alt constraint in the fmc you nearly forgot. well nice fmc. thanks.
initiatially i take 2000ft a min and watch out for the GS x5.
