Hi Kareem
SAP Learning Hub Customer Edition provides all course content necessary to for certification. Within this edition (and depending on the certification you are taking) there may even be a Learning Room for you to interact with an instructor and other peers.
What you do need to consider is the necessary system access to practise. Possibly this may require a subscription to SAP Learn Now (refer training. sap.com) or obtaining access to IDES or similar to get hands on experience
I recommend you have a look at the Training and Education space in SCN for more details and also reach out to your country's SAP Training and Education (go to training.sap.com for your country and get contact details there).
Regards
Colleen