You can try to find the electronic version of the information on the education website or online education platform. Some commonly used education websites and online education platforms are as follows:

1. Learning and thinking online school: Learning and thinking online school is an educational platform that provides online learning resources for various subjects. You can search the electronic version of Mathematics Elective and Guidance for Senior Two in official website.

2. Netease Cloud Classroom: Netease Cloud Classroom is a platform that provides a large number of online education courses. You can search for the electronic version of mathematics elective and guidance in senior two in Netease Cloud Classroom.

3. Tencent Classroom: Tencent Classroom is an educational platform that provides rich online learning resources. You can search the electronic version of second-year mathematics elective and guidance in Tencent classroom.

Please note that whether the specific electronic materials exist and whether there is a free version may require you to search further according to the actual situation.