Update download-go-annotations.md

_docs/download-go-annotations.md

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 # Download annotations 
 
-## GO annotation formats
-+ Released monthly
-+ Taxon-specific
-+ Available formats:
-  + [GAF format](/docs/go-annotation-file-gaf-format-2.1/)
-  + [GPAD](/docs/gene-product-association-data-gpad-format/) + [GPI](/docs/gene-product-information-gpi-format/)
-
-## GO annotation download links
-GAF files by species can be browsed and obtained from the [GAF download page](http://current.geneontology.org/products/pages/downloads.html)
+GAF files by species can be found at [GAF download page](http://current.geneontology.org/products/pages/downloads.html)
+
+GAF, GPAD and GPI files are also available from the [/annotations/](http://current.geneontology.org/annotations/index.html){:target="blank"} directory of the current release: [http://current.geneontology.org](http://current.geneontology.org){:target="blank"}
 
-GAF, GPAD and GPI files are also available from the [/annotations/](http://current.geneontology.org/annotations/index.html){:target="blank"} of the current release on [http://current.geneontology.org](http://current.geneontology.org){:target="blank"}
+Downloading annotations by specific taxon is possible through [AmiGO](http://amigo.geneontology.org/amigo/search/annotation)
+
+## Annotation files: General information
++ Released monthly
++ File format guides:
+  + [GAF](/docs/go-annotation-file-gaf-format-2.1/): GO Annotation Files are tab-delimited text files that are human-friendly (in addition to machine-readable)
+  + [GPAD](/docs/gene-product-association-data-gpad-format/) + [GPI](/docs/gene-product-information-gpi-format/) companion files: Gene Product Association Data (GPAD) files are intended to work in conjunction with a Gene Product Information (GPI) file
 
 ## Programmatic access to GO annotations
 As for any resource in GO, GO annotations are accessible through the DOI-versioned release stored in [Zenodo](https://doi.org/10.5281/zenodo.1205159){:target="blank"} and can be retrieved using BDBag. Read more about [programmatic access](/docs/tools-guide/#programmatic-download-bdbag).
 
 ## Error or omission ?
-Any errors or omissions in annotations should be reported by writing to the [GO helpdesk](http://help.geneontology.org/){:target="blank"}
+Any errors or omissions in annotations should be reported by writing to the [GO helpdesk](http://help.geneontology.org/){:target="blank"}