Greetings Teresa, I'm from Portugal too . As a student you should definitively get the full creative Cloud, you will have access to Photshop, Illustrator, InDesign, Adobe XD (just to name the most common ones for design). Also, you will have access to the amazing Adobe Fonts, where you will be able to get almost any font you will ever need - all included on your subscription. However, if you are on a budget, getting a single app can be an option too, being Photoshop the most popular one and you can do almost any work with just Photoshop (not ideal, but it is possible). At the moment Adobe is giving 40% discount on the full CC suite making it just €29.99+IVA per month, this will be probably the best offer you will get from Adobe. If you are a student and qualify for their student discount, you will get an extra 20% discount, making the blackfriday deal a whooping 60% off the regular price! Yes, Adobe CC works without internet, however some features might not be available (cloud sync for example). On your last question, yes it is possible to chat with a Portuguese representative, go to the Contact Adobe page, select your options and pick the Custumer Customer Chat option, just make sure you are using the Portuguese website. They also have a Portuguese Phone support, however they will contact you after you contact with them by chat (NOTE: I'm not affiliated with Adobe, nor I get any commissions, I'm just a happy costumer customer!)
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