Let's Talk NG for a bit:
NG is weird compared to a lot of other sites you can host videos on because the judging is done by experienced animators, hobbyists, and talentless cynics alike. The judging is uneven--so numbers and rankings don't matter or equate to squat. Always remember that. Same for the reviews, a detailed thought-provoking critique should never be summed up to a finite numerical amount. And there's plenty of that here. Views are just another number, an empty statistic--real money is in the comments. And not just quantity of comments, but thought that have been put into them. It's really rewarding when someone I've been inspired by drops in to talk about my animations for a bit.
That said, this is a great site for exposure and developing an awareness for the drastically difference audiences you'll grow compared to sites like youtube or deviantart. My advice is that you use DA as a soundboard for what to improve on and build a supportive fanbase (block any dicks instantly--keep that filter strong), make those corrections, and submit to newgrounds (or post in a NG opinion forum for more critique) for the most unbiased critique.
Also, never read any review below an 8.
Never respond to anything that isn't a 10.
Reading enough poison comments can actually make you feel bad. Especially when 80% of the people comment here don't understand the craft. If someone has something very profound to explain to you in order for you to improve, they'll do it via PM (that happens pretty often, and those messages are far more supportive and open to extended conversations). So just skip overy anything that can be potentially abusive to keep this hobby fun.
That's about it.