Hello Adrian, You have too many requests in your post.
There are many ways using SAGE mathematical software : 1) using the "old" website www.sagemath.org website : it was a website with internet browser access and you needed only to be a registered user to use it. Nowadays "SAGE cloud" has replaced that website ... but you might find active clone websites in various countries (different fro m UW = University of Washington) 2) booting you personal computer with a SAGE Live CD or a USB key : no need for internet, and you use the same interface (browser) that sagemath 3) using "SAGE cloud" cloud.sagemath.org : it is up-to-date website with internet browser access. You need to register and you access it with your browser. You can customize your environment of your "projects" in the web site 4) using the SAGE cell server. Read : https://sagecell.sagemath.org/static/about.html. Interface is also internet. But you can access to it via tablet app or from your personal web site. Some teachers (Rob Beezer) published on-line books using it...in the "web-book" you can have formulas evaluated remotely on the SAGE cell server 5) using a SAGE local install : you install Linux and after SAGE 6) using a SAGE virtual machine : you install virtual machine hypervisor (KVM,..) on your personal comp (Windows,Linux operating system) and then start the virtual machine, starting a SAGE environment 7) port the SMC cloud on your Linux web site . See github and some posts in googlegroups sage-cloud or sage-support Dominique PS : I do not understand what you mean with "resttrict calculations"....you have the %exercice decorator in SAGE worksheet to build on-line exercice, where user cannot modify the exercice (without coding) and can only answer the exercice -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.