Hello aspirant,

Hope you are doing absolutely great.

So, with regard to your question, you can download the books or study material for CA foundation course from the official website of ICAI i.e. icai-cds.org . Later on if you had registered then you can sign into your account find the material, but if you haven't registered, then you can register and sign in and get the materials.

Hope this helps you,

Thank you.