There are many different blocks with different functionalities,so for an easier understanding and to lack boring text...
here is images of blocks and how they function!
This will send a message of your liking in the logger with layout:
log [logNumber]:[input]
Other:
Warn and Error:
Visual differences in console
Sends an alert with the "history" of logs,warns and errors,like the tab that the breakpoint block in debugger has!
This block sets the logger to nothing
Simple as that