docs: Update Onboarding and Passwords

Author: rvl

docs/resources/Onboarding.md

@@ -18,8 +18,8 @@ This is the process for starting new developers on the project.
 - Ensure that you have a [[Passwords|Vaultwarden]] account associated with your `@iohk.io` e-mail address.
 - Follow the [[Jira#orientation-checklist|Jira Orientation Checklist]]
 - Skim the [ramp-up docs](#ramp-up-docs).
-- Ensure that you are able to edit Wikis. If you discover
-  something that needs documentation, add it to the Wiki.
+- Ensure that you are able to edit the [[index|Adrestia Website]]. If you discover
+  something that needs documentation, update the [[Documentation]].
 
 ## Ramp-up docs
 

docs/resources/Passwords.md

@@ -1,12 +1,21 @@
-## Shared passwords
+# Passwords
 
-Any passwords required for CI or accessing team accounts
-(e.g. Hackage) should be stored in LastPass.
+Any passwords required for CI (e.g. API keys) or team accounts (e.g. Hackage)
+should be stored in a secure place accessible to the whole team.
 
-There is a `Shared-Adrestia` folder for this purpose, and everyone
-should have access. Remember to accept the sharing request that was
-sent to your e-mail address.
+For this purpose, we have [Vaultwarden][]. Look in the
+[Adrestia](https://vaultwarden.iog.io/#/vault?collectionId=de029761-b704-40c7-a106-105cde4b5a35)
+collection under the
+[IO Global](https://vaultwarden.iog.io/#/organizations/3bbffbd9-f0f8-4fb7-9d18-cca627081df0/vault)
+organisation.
 
-### TODO: Vaultwarden
+[Vaultwarden]: https://vaultwarden.iog.io/
+
+## Tips
+
+1. Promptly accept your e-mail invitation to register an account under
+   [IOG Vaultwarden][Vaultwarden]. The invitations expire fairly quickly.
+
+2. You can use the [Bitwarden browser extension](https://bitwarden.com/browser-start/)
+   with [Vaultwarden][]. Find the extension's Options menu and then set a custom base URL.
 
-- [ ] Replace LastPass with [Vaultwarden](https://vaultwarden.iog.io/)