Hi Kathy
I second what Andy said. You could also look into ‘Teachable’. You can create an online school there and each student could have their own page where you post their content. Very cost effective and easy to follow.
Or an easy short term fix could be using google drive and posting videos, worksheets etc in there, then inviting students via email. School teachers are using this pretty effectively. Youtube should have tutorials if you are not familiar with google.
Keep up the great work!