Apps:

ankisrs.net

https://www.memrise.com/app

Dictionaries:

https://context.reverso.net/vertaling/

http://en.bab.la/conjugation/dutch/

http://www.interglot.com

Grammar overview:

http://www.dutchgrammar.com/nl/?n=Grammar.DutchGrammar

Newspapers online:

http://www.volkskrant.nl

http://www.nrc.nl

News websites:

http://www.nu.nl

http://www.nos.nl

https://www.dutchnews.nl/

Videos:

https://jeugdjournaal.nl/

https://schooltv.nl/

https://www.npostart.nl/ (with Dutch subtitles)