The eSchool Training Packages are designed to give you access to our training courses. The training covers basic skills and takes you to professional level training. The difference between the plans is access.
The crystal plan gives you access to the free courses. This is for people who cannot afford a paid package right away.
The paid packages (Silver, Ruby, Diamond & Platinum) give you access to all the courses. The difference is the duration for which you have access.
A long duration is advisable to allow for reasonable amount of time for the development of skill. This is because skill is acquired through repetition. Thus, longer access to the platform allows you to learn and repeat topics in order to master them.