Is there a way to self record your screen using Microsoft Streams or Teams?

CarlitaLopez I believe step 2 noted above is referring to https://support.office.com/en-us/article/join-a-meeting-in-teams-1613bb53-f3fa-431e-85a9-d6a91e3468c9, which you join through the Meeting link (shared by the meeting organizer, commonly embedded in the calendar invite if it is a scheduled meeting).  https://support.office.com/en-us/article/Record-a-meeting-in-Teams-34dfbe7f-b07d-4a27-b4c6-de62f1348c24 and the recording is uploaded to Stream.

Joining Teams sites is different from joining Teams Meetings, and how to access can vary depending on how Teams sites (or O365 groups) have been setup within your org. Public Teams sites are usually searchable, so users can go through the steps to https://support.microsoft.com/en-us/office/find-and-join-a-team-9f284981-39a1-486d-b43d-ab2dcc4c1e0f?ui=en-us&rs=en-us&ad=us; users can join a public Team without an owner granting them access.  Private Teams sites are restricted to specific group of users, so typically either an owner of the Teams site manages the access, adding/removing members and promoting members to owners, or a user can request access to the Team after finding it from search or with a link to the general channel of the Team site.

CarlitaLopezIt is probably your admin who will make the teams and add you to it.

Once your in a team, you can use all the possibilities mentioned above.