A TRX routine for beginners should be short and easy. The main goal is to familiarize the person with the equipment and open eyes to the possibilities. They should be able to enjoy this session to crave more of it.
It’s best to introduce simple movements that offer TRX variations of popular exercises. This reduces friction and allows them to make the transition quickly. They already know how it is supposed to feel. They just have to deal with the core engagement for better stability.
Beginners will have different backgrounds and levels of fitness. Some might need more load to get adequate stimulus. Others need to dial it down. The beauty of TRX is that adjustments are easy. They can walk backwards or forwards, lengthen or shorten the straps, widen their stance or make it narrower to achieve the right load.