The field of deep learning is moving really fast, and a lot of that research is available on arXiv. Andrej Karpathy built a tool that surfaces interesting papers: http://www.arxiv-sanity.com/
r/machinelearning tends to vote up significant work and news https://www.reddit.com/r/MachineLearning/
And this list of papers may be helpful: https://github.com/songrotek/Deep-Learning-Papers-Reading-Ro...
For total beginners, we created this page: https://deeplearning4j.org/deeplearningforbeginners