You looked through ClassFinder or myOkanagan and see a lot of words that don't make sense to you. Here is a quick list of terms that will help you navigate the registration process.
Corequisite: A course that is required to be taken at the same time as another course unless the course has been successfully completed before.
Prerequisite: A course that must be successfully completed before registration in a given course. Courses without a prerequisite statement indicate that no prerequisite is required for enrolment.
Second-year Standing: Second-year standing requires successful completion of a minimum of 24 credits at the 100 level or above.
Third-year Standing: Students will be granted third-year standing after completing 48 credits towards a diploma or degree program.
Fourth-year Standing: Students will be granted fourth-year standing after completing 78 credits towards a degree program.
Registered Student: A registered student is one who has completed the admission and registration procedure and who has paid or made appropriate arrangements to pay the required fees.
Transfer Credit: Credit given by an institution for work successfully completed at a different institution.
If this does not help you, have a look at the Definitions section in the official Okanagan College calendar.