I'm still trying some other CAD/schematic apps I've seen recommended.
This is an old package, and has a lot of old parts libraries (that you can delete if you wont use them) - eg VALVES. All the libraries that start sm are for surface mount components.
It is very simple to use and behaves consistently with other apps - eg the select, Ctrl-z undo , delete, Ctrl-C Ctrl-V all behave as expected. The diagrams it produces are clear and readable.
The libraries have a search function so adding general components is very easy, and component identifiers and values are easily changed and positioned. Its also easy to make new parts if you cant find a ready-made one.
A point to note is that if the component sidebar is not visible you need to turn on
Options- toolbars - Symbol
I like this, I'd recommend it for beginners as a good way to progress to a more modern and sophisticated app such as Eagle.
There is a very good (albeit dated) guide to using TinyCAD here - But DONT delete the default libraries and install the "Alt" ones.
If you need more symbols you can easily make your own, but there is also an extensive symbol repository where you can search and add symbols to your own "personal" libary and download it.
And finally - for TinyCAD - my own library of parts for the Arduino; some collected from other sources, some - the Micro Pro, ESP32 and NodeMCU 8266 - I made myself; attached to this reply. Enjoy.
arduino.zip (17.5 KB)