Do you have any specific questions about tools or what terms mean? We can help you decode some of the terms and help with what tools are actually necessary.
I don't know of books that use the metric system, since I'm in the US, but this is one I used way back when.
Edit: this is another super simple beginner ebook
Welcome to the community! One of my favorite resource books is [The Practical Guide to Patchwork: New Basics for the Modern Quiltmaker(https://www.amazon.com/dp/B004RQD3IO/ref=dp-kindle-redirect?_encoding=UTF8&btkr=1) (Amazon link) by Elizabeth Hartman. I don't have a copy in front of me, but teaches you all the steps to make a quilt from fabric and color palette selection, to sewing the blocks, to making the quilt sandwich (2 fabric layers with batting between them), to quilting (sewing the layers together), to binding the finished quilt. Your local library may also have a quilting section with some great resource books. And have fun! Your quilts don't have to be perfect, just functional.
I'm very sorry for your loss. I don't know what kind of quilts you prefer, but Modern Memory Quilts by Suzanna Paquette has some lovely ideas that go beyond "cutting t-shirt fronts into squares and sewing them into rows." I was able to get a copy of the book through inter-library loan a while back.
https://www.amazon.com/Kansas-City-Star-Quilts-Sampler-ebook/dp/B07KY3Y9QS/ref=pd_sim_351_5/136-6038243-5743857?_encoding=UTF8&pd_rd_i=B07KY3Y9QS&pd_rd_r=1e377651-1840-485e-ba26-392a74de0c70&pd_rd_w=UHYIT&pd_rd_wg=EbrkH&pf_rd_p=04d27813-a1f2-4e7b-a32b-b5ab374ce3f9&pf_rd_r=HC397RBS1HF25CZRN8T0&psc=1&refRID=HC397RBS1HF25CZRN8T0 I just saw the Rob Peter to Pay Paul pattern in this book on Amazon when I was looking through the preview. I took a screenshot, but don't know how to post a picture in the comments.