Give yourself time to read about your system, time to play, and time to relax and have fun with your computer. Believe it or not, the best way to understand how to use a computer system is to play around with it. Poke around. Test things. Try weird options, and see what they do. As long as you're not rushed to start your serious work, you have time to easily grow with the system. After the workload comes, you will feel good about the system, and, lo, that expected and much-rumored frustration won't be there.