Before the course, think about the kind of work you do most. Interviews in offices, panel talks in halls and small streamed events each bring different sound problems. Write down two or three recent jobs and what went wrong with the audio. Those notes give you real material to bring to the exercises, and instructors can use them to shape examples.
Check your own kit and know what it does. Find out which microphones you have, how your recorder or mixer is powered and what cables you carry. Many problems come from a flat battery, a missing adapter or an unlabelled cable. Spending an evening testing and labelling your kit pays off in the first module.
Practise listening. Put on headphones in a normal room and notice the fridge, the traffic, the air conditioning and the echo. Most people stop hearing these sounds, and the microphone does not. Training your ear to notice them is one of the fastest improvements you can make before the course begins.
Ask the right questions ahead of any shoot. How many speakers will there be, and where will they sit? What is the recording format, and does a stream need a mix as well? Is the room carpeted or bare, and can doors and ventilation be controlled? The answers decide your microphones and plan.
Finish with a short checklist you can keep in your kit bag: power, spare batteries, spare cards, headphones, cables, a second recorder and a note of the venue contact. Over the course you will refine it, and by the final module it should fit one page and reflect how you work.