I recently bought a new domain and transfered my old site's files to it. It's all nice, but the logo still points to the old site. How can I adjust it? Here's my new site home page and the logo is in the upper left corner (blue colored with a book image in it)
That sort of thing is completely in the control of the template designer; Joomla doesn't care how that's set.
Not being familiar what template you're using, it's hard for me to tell precisely how it's done. From the site's markup, it looks like it's in a module (would probably be a custom HTML module). I'd look for one of those called something like "logo" first. It might also be in a configuration parameter for the template itself (Extensions->Templates then click on the template).
Those are the two most typical ways of handling it. Unfortunately, it might be hardcoded in the template's index.php file as well, or done in multiple other manners as well.
If the template was a purchased one from one of the template houses, maybe if you add which one it to your question, someone might come up with a better answer.
Addendum: To see if it's coded in the template's index.php file you need to ook in the template's index.php file. One way is to go to Extensions->Templates->Templates, then click on the template name. There will be a list of files on the left. Click "index.php" there. DO NOT CHANGE ANYTHING IN THAT FILE! Look for the lines in that file around something like this:
<jdoc:include type="modules" name="logo" />
Again, don't make any changes but copy out the few lines above and below that, and that might give us a better chance of figuring this out. Or not (template sellers write notoriously hard to read code).
I solved it myself by going to PHPMyAdmin. There I chose my site’s db. Went to SEARCH. Ran a search for “logo” in all tables. Found it in table “modules”. Edited the info there and saved it. That’s it! Before all that, I grepped in Ubuntu terminal window all my site’s folders and didn’t find it there… with this command:
xxx@xxx:~$ sudo grep -Ril “repetit.moscow” /var/www/tutoring.solutions/public_html