Thanks cockysprinter!
OK…I want to start my training on Monday and I read that first you should analyze your current performance, in order to plan the training for the optimal performance. So I've made some training today (when I'm writing this, in Romania it's around 11 a.m). I've started with the common warm up, the one that I do at the soccer team, adding 600m jogging and some jumping. Then I've run 3x30m and 2×60. Only to feel it, I've run 2×100 in the end, followed by cooling down.
After this small training I discovered that I have some problems like:
1. It seems I must work on my ankle's mobility, as I feel some disconfort after the training (can be this due to the fact I've run on cement?)
2. I also must work on my sprinting technique. I've had a good start in those 100's but after ~60m I've had problems to maintain the correct position, so I haven't managed to maintain the maximal speed. I guess this can be solved by paying more attention to my technique during some sprints.
Other question I have: Is there any problem with my height and weight: 1.77 m / 72 kg – something like 5.8 feet / 158 pounds (sorry, in Romania only metric system is used so I've made the conversion with google).