As soon as you purchase a course, you will gain access immediately to your entire course (if its online), or the hybrid component so you can study up and be well prepared before you have the in-person laboratory. But, unlike other course providers, you will maintain full access to your course and the course instructors for life. There is no time limit in which you need to complete the course* and you will forever be able to access material to brush up on material at your convenience.