Basic English

''Basic English (British American Scientific International Commercial) is a constructed (made-up) language to explain complex thoughts with 850 basic English words chosen by Charles Kay Ogden.
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The word use of Basic English is simpler and more regular than the word use of full English. Not all the meanings of each word are allowed.

Ogden's rules of grammar for Basic English help people use the 850 words to talk about things and events simply'' [source]

- LEARNING OGDEN's BASIC ENGLISH 

Projects and References for Learners

http://www.basic-english.org/learn/learn.html

- And here you can build sentences in Basic English:

http://www.basic-english.org/learn/oww1a.html