Open Nokia PC Suite and copy all contacts into the Windows Address Book. Open iTunes, click on your device name on the left column and click on "Info". Click the "Sync Contacts with.." and it should already be on the Windows Address Book selection. Click "Apply" then click Sync to make sure you synced everything to your idevice.
Totally impossible. Bluetooth in iPhone is not intended for data transfer rather for connectivity (i.e. between your iPhone and a Bluetooth headset, etc.). In the best case scenario, you can transfer contacts from iPhone to your car if the system on your car is pbap-enabled.
To what email client are you trying to import them?
As a general rule using either iCloud or the app I mentioned My Contacts Backup, will allow you to export all of your contacts in a .vcf file. You should simply be able to import that file in the your email client.