Use Dataloader.io to import / export data from Salesforce.com. What I specially liked about Dataloader.io is that it is entirely web based. Unlike Salesforce Apex Dataloader, you don’t need to install anything on your computer. More
If you want to change the custom field of ‘Text’ type to ‘Picklist’, the new picklist field will automatically pickup current distinct values from the text field (upto a maximum of 250).
When subscribing to Salesforce.com, Environment licenses (i.e. Editions) can change, but they can only go up in edition, not down. So for example in the case of Sales Cloud you can start with Group Edition, upgrade to Professional Edition, upgrade to Enterprise Edition and finally upgrade to Performance Edition. More