Bitcoin Wallet Synchronization

I’m very new to Bitcoin so I apologize if this question is naive. I just downloaded the Bitcoin, Litecoin, and Dogecoin Qt clients and opened each of these apps. Consistent with their coin’s valuation, the Dogecoin client syncing was fastest, taking 3 hours, Litecoin took 20hrs, and Bitcoin is still trying to sync for 3 days now (progress bar shows only 25% synced).

I’m using a 2012 MacBook Pro (10.7.5) and have a good internet connection in a major city. Some questions:

Bitcoin wallet encryption

Bitcoin QT Synchronizing

Litecoin Wallet Generator

Litecoin wallet Coinotron

Litecoin wallet Creation