How to enable SSH server?

[parry]

For me it was as easy as do:
On Pinephone:
0. Connect to WiFi
1. Get the Ip doing what @pizzalovingnerd  said.
2. sudo apt-get install ssh

On my computer:
ssh mobian@Pinephones IP

I'll add another step:
3. sudo systemctl enable ssh && sudo systemctl start ssh

You don't need to enable, it just makes sure it'll run on boot.
But you need to start in order to use.

I followed all of the suggestions in this list, but keep getting  "no hostkey alg" which seems to indicate that there is no key.  Another challenge is finding anything in this forum. Is it me or when I search the forum I get a list of results, but where the term I am looking for shows up in a multipage list is not clear. What am I doing wrong with ssh and with search ? Thanks