All the SAP trainings are in weekdays. I would suggest to start going through help.sap.com. And check with friends whether they can give some kind of basis knowledge on SAP Basis administration.
You can install trial versions of SAP products.see - https://store.sap.com/sap/cpa/ui/resources/store/html/Solutions.html?pcntry=US&catID=DBT&sap-language=EN&_cp_id=id-13988…