Getting to know the Software Heritage archive

Add direct link to the Guided tour + video of the guided tour

1. Tutorial: Searching an origin
2. Tutorial: Browsing the universal source code archive
3. How to get and choose a swhid in the archive
4. How to list visits
5. How to submit a save code now request
6. How to download content
7. How to use the API
   1. existing scripts examples
8. Reference: pull vs push - overview of the Software Heritage archival strategy
   1. Lister and loader
   2. Deposit on a partner's platfrom
9. Reference: Archive, Reference, Describe and Cite source code using Software Heritage