In a small space, you can grow both vegetables, fruit, herbs and edible fish.
It can be as simple or complex, and as small or large as you want
Nowadays we recognise that animals learn in different types of ways. The following table illustrates learning from simpler mechanisms at the top down to more complex types:
A draft extract from soon to be published ebook on Working with Animals. Check this site to buy a copy when available.
Learning anything about animals will not only help you get a job, and experience; but it will more importantly, help you keep the job, progress in that job, and develop a sustainable career.
Getting qualified alone is never going to guarantee a sustainable career. Learning can come from doing formal courses or informal in house training within your job, training with an external agency, taking a course and so on.
It is important to understand the differences between different types of courses; and to choose what you study according to what will help your career the most.