Two ways of speaking
Modern Standard Arabic and spoken Arabic
They are one language family. They are not the same conversation. A handful of ordinary words will give you away. Learn the one you will use.
Start with the Arabic you will practice
Learn a dialect if your reason is a specific city and the kitchen, the street, and the family who live there. Learn Modern Standard Arabic if you want the shared formal language: news, books, speeches, and a conversation that can travel.
Paseo practices Modern Standard Arabic. You can love Cairo and still be honest about which Arabic you are practicing.
What you will notice first
A greeting is often the first split. Modern Standard Arabic says كيف حالك. Egyptian often says إزيّك. Levantine often says كيفك. People who speak a dialect still understand a careful Modern Standard sentence. The reverse is less reliable in the first month.
Wanting something splits too. Modern Standard Arabic uses أريد. Egyptian often uses عايز. Levantine often uses بدي. Learn one pattern first.
أريد قهوة.
I want a coffee. (Modern Standard)
عايز قهوة.
I want a coffee. (Egyptian)
One variety is enough at the start
Do not mix them in the first month. Switching varieties mid-sentence makes you hesitate, and it makes listening harder. Pick one. If that one is Modern Standard Arabic, stay with that audio, those phrases, and a coach who speaks it.
A dialect is not a mistake, and Modern Standard Arabic is not a museum. They do different jobs. The job Paseo practices is Modern Standard Arabic.
كيف حالك؟
How are you? (Modern Standard)
إزيّك؟
How are you? (Egyptian)