There is also the Druidic Decoder feat: Prerequisites: Linguistics 1 rank, cannot be a druid.
Benefit: You gain a +5 bonus on Linguistics checks made to decipher writings in the Druidic language. If you have 10 or more ranks in Linguistics, add Druidic to the list of bonus languages available...
I don't think you can ready two actions at a time. You can ready a free action to 5' step when someone approaches you, but you can't ready an attack *and* a 5' step.
If you have a character with UMD (use magic device) you can cast a scroll of Awaken and there is a good chance that the awakened animal (or plant) will know druidic.