MyCSI - https://mycsi.csi.edu/ - search schedule of courses, register for courses, add/drop classes, pay online, look up financial aid information, access unofficial transcript, etc.
Free Student Self-Service - you can order your official transcripts, print enrollment verification certifications, view your enrollment history and enrollment verifications provided at your request, check loan deferments sent to your lenders, and link to real-time information on your student loans.