Practise putty - they don't have secure crt. Learnt how to copy/past. For the topology to build (H1/2/3) make sure you double check the pre-configuration already done. You are happy first to save time, but at the end with the traceroute, you discover they have missed few portion (tricky) - double-check the traceroute in detail at the end. Has to match perfectly. Overall, stay calm and relax. Have confidence, you are a king !!