I'm getting close to completing the 5 level online Rosetta Stone course, so I start wondering what should I do next in terms of learning grammar and vocabulary?
The long-term goal being visiting or living in Europe, is it more useful to
- get a good book/study guide?
- enroll in a language school in Germany? (e.g. here, but are short courses good?)
- stop worrying about grammar, since I'll just pick it up after some practice?