Setting up a Linux installation can be done in many different ways, but preserving your settings and bookmarks is nice, so you don't have to redo them after a re-installation. This set-up uses another partition (in the example, called "archive") to store your photos, documents, settings for installed programs and your mail program, and connecting to them via symlinks.
Sometimes, the font size on a web site is too small, for example at https://www.retsinformation.dk/ where the font-size is 11.2 pixel. You can override the text size locally, via the userContent.css file.
You can install the light weight Electrum Bitcoin wallet with these commands. There are many advantages of using a Desktop wallet, as opposed to keeping your digital currency on an exchange, where you have less control. Another, and possibly safer solution, would be using a hardware wallet.
If your Ubuntu installation sometimes drops into a black screen showing something like /dev/sda1: clean, 227147/30269440 files, 3330843/121068288 blocks, try to get get back to your installation by pressing Alt+F2.
Pyrenamer doesn't exist for Ubuntu 18.04, but GPRename is a similar GUI batch renamer app from the default Ubuntu repositories. To quickly open a program in Ubuntu, you can press the Super (Windows) key and start typing, but GPRename isn't added after installing it: