You've heard about free software, about open source software, but you don't know where to start, because you've always used Windows or Apple ?  I can help you get up and running, whether you're a private person or a company.  I can also just explain you what free software is about, and what are its advantages, but also what are its problems.  I have a high opinion about the principles of open source software, but that doesn't mean that I'm an evangelist.  It is very well possible that for your case, free software is not the solution, and I can inform you about this.  In as much as open source software is free of charge by itself, the usage of open source software can be costly.  One has to prefer open source software for its freedom, not because of it being free of charge, because one can make a mistake on this point.  Let's discuss these points together.