Pls am in want to know how to buil;d a soft ware of my own any that knows how should teach how to do it and i believe that i will surely get it down in this site

Errr thats vague. What language do you program best in?

I bet you know what a software means,lets say you know,coming to what you asked,softwares are programmed with programming langauge,so you need to learn one in other to develop a software.there are over 100 available to choose from,wikipedia and google should help you a lot.

To develope a software you need to understand two things first what will your software do?, and secondly how are you going to achieve it?
The most important of all you should know that computers dont speak English nor fulfude or yoruba but 1 and 0. luckily for you there are series of high level language that stand between us and computer that makes life easier for us, these languages are C, C++,C#, Java