Both of them let you simulate electrical circuits, and wokwi can also simulate small processors and their interactions with circuits.

Both tools are beginner friendly.

Pretty much everything you will be learning about can be played around with in those tools, and you can get far quicker feedback from a simulator than a real circuit where one wrong move burns out a component and then you have to wait a few days whilst more arrive from digikey.

Seeing voltages and currents flowing through the circuit as animations is amazing for understanding, and being able to slow time down to 1 billionth of regular time is really handy for understanding exactly what is happening when some component acts unexpectedly.

(Obviously still build a few circuits in real life)