Starting a training regimen can be quite overwhelming. I often get the question of, "how do you to it?" Which translates to, "how do *I* do it?" My first response is just about always, "baby steps".
The hardest thing about your training is most likely going to be motivating yourself to put your sweat-friendly clothes and shoes on; coupled with making it out the door or onto your treadmill. After that it gets much easier, I promise. Just be sure to take it slow....
Once you get in gear it's time to start getting active! If you are a go getter you might even need a friend or trainer to curb your enthusiasm, if your happy to go slow then you might need someone to coax you into pushing a little harder. Either way, it can be helpful to find a trainer/friend/family member to help motivate you; quick texts, phone calls, or maybe they'd even join you!
When you get started with your training program, whatever it is, you have to start from where you are. Not where you were in high school or 6 months ago, but from where you are NOW. If you have been sitting at a desk for the last 6 months and the most activity you've done is walking the grocery store then a good place for you to start may be something like walking for 20min a day most days of the week. If you are an avid walker already then you can push yourself to walk longer, faster *OR* start intermittent jogging.
Notice the *OR*, trust me, it's important. Too much too soon can lead to over-soreness, injury, frustration and feeling too overwhelmed to keep going with your plan.
So, if you'd like to get started, get out your clothes and put your shoes by the door, or the chair you sit in to get ready. When you find the day you are all suited up pick a comfortable distance or set the timer for an out and back 10-15min each way. Stretch gently, sleep, eat, repeat 3-5 times a week!
Write something about yourself. No need to be fancy, just an overview.