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Signed-off-by: davidarendsen <davidarendsen@hey.com>

README.md

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 # InfluxDB 2.x Flux Query Builder
 
 With this query builder you can build queries for Flux.
-See https://docs.influxdata.com/influxdb/v2.4/query-data/flux/
+
+[Check our documentation](docs/00-index.md)
 
 ## Installation
 

docs/00-index.md

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+# Flux Query Builder Docs
+
+Welcome to the documentation of the PHP Flux Query Builder.
+
+* [InfluxDB concepts](01-what-is-influxdb.md)
+* [What is Flux?](02-what-is-flux.md)
+* [Official InfluxDB documentation](https://docs.influxdata.com/influxdb/v2.6/query-data/flux/)
+
+

docs/01-what-is-influxdb.md

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+# Flux Query Builder Docs
+
+## What is InfluxDB?
+
+If you're used to working with SQL databases you may need to understand a few concepts. This page will explain some InfluxDB concepts.
+
+InfluxDB is a time-series database. This means the index is a time. This time can be accurate until nanoseconds. This makes it perfect for logging purposes.
+
+### Buckets
+
+Buckets could be seen as databases. They can be configured with a retention time. This can be set from a few minutes until eternity. 
+
+### Measurements
+
+Each bucket can contain multiple measurements. This can be seen as a database table. They hold the actual inserted data.
+However the main difference is that they don't have a pre-determined structure. Which means each data insertion can have a different data structure.

docs/02-what-is-flux.md

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+# Flux Query Builder Docs
+
+## What is Flux?
+
+Since InfluxDB2 they introduced this new Flux query language. Coming from a SQL database background this is a totally new concept and language to learn.
+
+### Example Flux query:
+```js
+from(bucket: "example-bucket")
+    |> range(start: -1h)
+    |> filter(fn: (r) => 
+        r._measurement == "example-measurement" 
+        and r.tag == "example-tag"
+    )
+    |> filter(fn: (r) => r._field == "example-field")
+```