When working out, try to work opposing muscle groups back to back. As you are working one muscle, the other one is able to rest. This prevents your muscles from getting fatigued as quickly. This also saves a significant amount of times between sets. For example, work on your triceps, immediately followed by biceps.
As you can see, there is nothing scary about deciding to get fit. All it takes in the determination to stick with it and watch your goals become a reality. This article has shown you some great ideas on how you can achieve personal fitness, you just need to put them into practice.