There are plenty of useful information on this blog - dt.iki.fi
Ofc, search on this forum first. Once you know your way around the terminal, it’s easy to change DNS and block ads in the browser. Changing the search engine is even easier.
There is also the Mycroft Project (even though it seems to be down at the moment) that allows you to install the search engine for a lot of services (I even created one for a service that did not present itself as searchable but had a trivial URL for this purpose).
As others already pointed out. Two months using the device are fine but more than two hours reading the forum or using the search function for at least one hour would have answered many of your questions which are now being answered by the community.
Thanks all for the suggest for the last comment WT.Sane
“using the search function for at least one hour would have answered many of your questions“
This is fine for you and me, but think about those who don’t know how to use a linux terminal. Those who buy it won’t start troubleshooting if something goes wrong; they’ll say it’s not a good phone, don’t you think?