How do I learn cleanroom protocols without feeling overwhelmed?

The protocols and contamination control feel like a wall of rules, all urgent, all at once. Of course it overwhelms you. No one absorbs a whole system in one go. What feels like one impossible thing is really many small things you can learn one at a time. Start by understanding the single idea underneath all of it: keep the unwanted particles out, keep the clean space clean. Almost every rule is just one way of doing that. When you see the purpose behind a step, it stops being a rule to memorize and becomes something that makes sense. Sense is far easier to hold than a list. Pick one procedure this week and learn it until it is second nature before touching the next. Overwhelm comes from trying to hold everything; calm comes from mastering one thing at a time. You do not need to know it all today. You need to know the next piece.