3b9272e66fdac648a90baf02dc5eb696a286fdf1
mspeir
  Sat Mar 28 16:06:45 2026 -0700
revamping page, refs #36894

diff --git docs/index.md docs/index.md
index e04395941d6..d7144ff96e1 100644
--- docs/index.md
+++ docs/index.md
@@ -1,13 +1,127 @@
 ---
 title: "Genome Browser Documentation"
 ---
 
 Browse all UCSC Genome Browser documentation by topic.
 
-## Tutorials
+New to the Genome Browser? Start with our [Genome Browser Basics
+tutorial](/docs/tutorials/gb101.html), a 15-minute walkthrough of the
+interface, navigation, and track display. You can also browse our
+[glossary](/docs/genomeBrowserGlossary.html) to learn common terms used throughout
+this documentation.
 
-[Tutorials](tutorials/index.html)
+## Using the Genome Browser Interface and Tools
 
-## Hubs
+The Genome Browser offers a dynamic interface for visualizing genomic data on
+a variety of genome assemblies. In addition to visualization, there are several tools
+for extracting data from the current visualization.
 
-[Hubs Basics](hubs/hubBasics.html)
+### Tutorials
+We offer detailed step-by-step tutorials for several of our tools:
+
+| Title | Description | Link |
+| - | - | - |
+| Genome Browser Basics | Covers basics of the UCSC Genome Browser track interface | [View Tutorial](/docs/tutorials/gb101.html) |
+| Gateway Page | Learn to find genome assemblies | [View Tutorial](/docs/tutorials/gatewayTutorial.html) |
+| Table Browser | Introduces Table Browser queries | [View Tutorial](/docs/tutorials/tableBrowserTutorial.html) |
+| Custom Tracks | Upload your custom annotations | [View Tutorial](/docs/tutorials/customTrackTutorial.html) |
+
+Navigate to our [Tutorial index](/docs/tutorials/index.html) to see them all.
+
+### Video tutorials
+Our [training page](/training/index.html) has short how-to videos covering common
+tasks like saving sessions, using BLAT and isPCR, finding SNPs in a gene, and
+using Multi-Region View. We also offer in-person and virtual workshops,
+[contact us](/docs/contacts.html) to host one at your institution.
+
+## Understanding Genome Browser Assemblies and Annotations
+
+The Genome Browser allows for the visualization of various annotations on
+a wide variety of genome assemblies. A genome assembly is a reconstruction of
+an organism's complete DNA sequence from shorter sequenced fragments. Different
+assemblies of the same species may exist as sequencing technology improves
+(e.g., hg19 vs. hg38 for human).
+
+- Use our [gateway page](/cgi-bin/hgGateway) to access popular assemblies or
+  search for an assembly of interest. Learn more from our
+  [tutorial](/docs/tutorials/gatewayTutorial.html).
+- If your assembly is not available, [request it](/assemblySearch.html).
+
+The Genome Browser displays annotations as horizontal "tracks" layered beneath
+the genome coordinate ruler. These tracks fall into several major categories:
+
+- Genes and Gene Predictions: curated and predicted gene models (GENCODE,
+  RefSeq, Augustus)
+- Regulation: transcription factor binding, histone marks, DNase
+  hypersensitivity (ENCODE, Roadmap Epigenomics)
+- Comparative Genomics: cross-species conservation scores, alignments (PhyloP,
+  PhastCons, chain/net)
+- Variation: SNPs, structural variants, clinical variants (dbSNP, ClinVar,
+  gnomAD)
+- Repeats: repetitive elements (RepeatMasker, Simple Repeats)
+- Mapping and Sequencing: assembly structure, gaps, chromosome bands
+
+Each track has its own description page (accessible by clicking the track name)
+with details on the data source, methods, and display conventions. Human and mouse
+assemblies (e.g. hg38, hg19, mm10, or mm39) will include tracks across nearly
+all of these categories. However, most assemblies may only have a basic set of
+annotations (genes, repeats, assembly mapping).
+
+Relevant FAQs:
+
+- [Gene Tracks](/FAQ/FAQgenes.html)
+- [Genome Browser Tracks](/FAQ/FAQtracks.html)
+
+
+## Visualizing Your Own Data
+
+The Genome Browser allows you to visualize your own data alongside the data we host:
+
+- [Custom tracks](/cgi-bin/hgCustom)
+    - See our [documentation](/goldenPath/help/customTrack.html) to learn how to load your own
+- [Track hubs](/cgi-bin/hgHubConnect?#unlistedHubs)
+    - See our [Hubs Basics](/docs/hubs/hubBasics.html) page to create your hub
+    - Checked using our [hub development tools](/cgi-bin/hgHubConnect?#hubDeveloper)
+
+For both hubs and custom tracks, we provide storage through [hub space](/cgi-bin/hgHubConnect?#hubUpload).
+
+## Sharing Your Data
+
+Once you've loaded and configured your data, you can share it with others
+through several means:
+
+- [Links](/FAQ/FAQlink.html)
+- [Sessions](/cgi-bin/hgSession)
+- [Public hubs](/cgi-bin/hgHubConnect?#publicHubs) (to contribute your own, see
+  our [guidelines](/goldenPath/help/publicHubGuidelines.html))
+- [Contributed tracks](/docs/hubs/contributedTracks.html) for GenArk assemblies
+
+Relevant FAQs:
+
+- [Data File Formats](/FAQ/FAQformat.html) - see the formats supported by the Genome Browser
+
+
+## Downloading Data from the Genome Browser
+
+Beyond data visualization, the Genome Browser offers a wide variety of ways to access
+and work with the underlying data:
+
+- The [download server](https://hgdownload.gi.ucsc.edu/downloads.html) provides
+  access to the data underlying the Genome Browser,
+  in addition to pairwise alignment and LiftOver chain files.
+- Our [REST API](/goldenPath/help/api.html) can be used to retrieve data in JSON format.
+- Our [public MySQL server](/goldenPath/help/mysql.html) allows command-line access to underlying data tables.
+- We provide [command-line tools](https://hgdownload.gi.ucsc.edu/downloads.html#utilities_downloads)
+  for working with bigBed, bigWig, or other formats,
+  and command-line versions of our tools like `liftOver` or `blat`.
+
+We also provide scripts for creating your own
+[mirror](/goldenPath/help/mirror.html) of the Genome Browser software and
+databases, although it is often recommended to explore other methods of
+visualizing your custom data as mirrors can require significant effort and
+storage space to set up and maintain.
+
+Relevant FAQs:
+
+- [Data and Downloads](/FAQ/FAQdownloads.html)
+- [Mirroring or Licensing the Genome Browser](/FAQ/FAQlicense.html)