Update 01_introduction.md

Add explonation of FAIR, fix typo

docs/courses/01_introduction.md

@@ -1,12 +1,12 @@
 # 01 - Introduction
 
 Welcome to the courses section of the Open Energy Academy (OEA). On the OEA, we have created a series of training courses which provide various material on how to interact with [Open Energy Platform](https://openenergyplatform.org) (OEP). 
-The OEP is a web-interface for things related research data management in climate and energy systems modelling. On the OEP, researchers can publish data including FAIR metadata and thus contribute to increasing transparency and interoperability of their research. The functionalities the OEP offers help deliver the [research data management lifecycle](https://liascript.github.io/course/?https://raw.githubusercontent.com/NFDI4Energy/EFZN_rdm/main/README.md#3). 
+The OEP is a web-interface for things related research data management in climate and energy systems modelling. On the OEP, researchers can publish data including FAIR metadata (which meet principles of findability, accessibility, interoperability, and reusability) and thus contribute to increasing transparency and interoperability of their research. The functionalities the OEP offers help deliver the [research data management lifecycle](https://liascript.github.io/course/?https://raw.githubusercontent.com/NFDI4Energy/EFZN_rdm/main/README.md#3). 
 
 To get familiar with research data management in general, we recommend to visit this interactive and comprehensive course [Research Data Management](https://liascript.github.io/course/?https://raw.githubusercontent.com/NFDI4Energy/EFZN_rdm/main/README.md#1) by University of Oldenburg, Center for Lifelong Learning, Digitalisierte Energiesysteme, funded by Energie-Forschungszentrum Niedersachsen and supported by nfdi4energy and Zentrum für digitale Innovationen Niedersachsen. 
 
 Each of the training courses here on the OEA are targeted at working with the Open Energy Platform and its tools. The courses contain written content and / or links to learning materials which cater to different levels of expertise. Some materials are targeted at fluent programmers, others are targeted at persons who prefer to interact with the OEP visually.
-As a visual guide regarding what to expect behind links you may find in a training couse, we use the following icons:
+As a visual guide regarding what to expect behind links you may find in a training course, we use the following icons:
 
 :oep-icon-code: links to written training material. The material may include some code for guidance.