resources: http://datasciencemasters.org/ http://www.datatau.com/ http://stats.stackexchange.com/
SQL: https://leanpub.com/aprimeronsql/read http://sqlbolt.com/ http://html5doctor.com/introducing-web-sql-databases/ http://html5sql.com/ https://en.wikipedia.org/wiki/Query_string http://sqlite.org/lang.html https://en.wikipedia.org/wiki/SQL_injection http://www.cheat-sheets.org/sites/sql.su/ http://sqlfiddle.com/#!9/dcb16/1 http://sol.gfxile.net/g3/ http://docs.sequelizejs.com/en/latest/
Mongo: http://openmymind.net/2011/3/28/The-Little-MongoDB-Book/ https://en.wikipedia.org/wiki/MongoDB https://www.npmjs.com/package/mongoose
Other Database: https://en.wikipedia.org/wiki/NoSQL
database design/database design: https://msdn.microsoft.com/en-us/library/cc505843.aspx https://en.wikipedia.org/wiki/Information_engineering http://www.agiledata.org/essays/dataModeling101.html https://en.wikipedia.org/wiki/Database_design
charts: http://www.chartjs.org/docs/ https://d3js.org/
datasets:
https://github.com/caesar0301/awesome-public-datasets
https://www.reddit.com/r/opendata
http://www.ibm.com/smarterplanet/us/en/ibmwatson/developercloud/services-catalog.html?ref=producthunt
https://www.reddit.com/r/datasets
http://opendata.stackexchange.com/tags
http://www.lab41.org/nine-datasets-for-investigating-recommender-systems/
APIs: postman https://www.quora.com/What-are-some-cool-fun-APIs http://www.computersciencezone.org/50-most-useful-apis-for-developers/ http://www.creativebloq.com/web-design/apis-developers-need-know-121518469
Open data: http://www.opendataenterprise.org/map.html
APIs I have used: http://www.zillow.com/howto/api/APIOverview.htm https://developers.google.com/maps/documentation/javascript/ https://data.seattle.gov/Public-Safety/Seattle-Police-Department-911-Incident-Response/3k2p-39jp http://crossorigin.me/ Amazon sdk for S3 heroku twitter API