If you're open-minded, there's all the advantage in the world. If not, frankly, you're going to struggle. How open-minded are you in switching? You should study up, as the prior poster stated.
Quick answers:
Advantages: more efficiency (if you're open-minded), less bloat, less being tied to MS, less of being affected by viruses and malware.
Disadvantages: less efficiency (if you're closed minded), frustration if you're not willing to learn a new OS and new tools.