Stick to your route unless there are major encumbrances preventing you from doing so.
Follow what your guide asks you to do. As a beginner, heed the wisdom of the experienced while still using your own judgment and being responsible.
Take regular short breaks to eat energy foods, rest briefly and to assess your direction. However, don't linger too long where you cool down too much.
Keep hydrated. It's easy to dehydrate in the cold because your body doesn't seem thirsty, so be sure to keep drinking fluids regularly.
Stay with the other climbers at all times.
Enjoy the summit. Take photos and feel proud.