I just realized you may be looking at the instructions on the development Wiki (which are not very clear.) Have you looked at this forum post?
notedop has updated my original instructions for 0.9.3b for the latest release. This is as clear as instructions get (which I will admit is not all that clear,) this is a complex installation, a typical Qt install takes me around 8 hours of downloading (often multiple times at 8 hours each, when I forget to do something) then you need libgit2 (which took me a long time to figure out how to compile for Windows) and boost. After that things go fairly easily as long as you are familiar with software development. Just start QT creator and build. If you can tell me what is unclear about the instructions one of us can try and improve them but I expect it is going to remain a complex process no matter what we do. The donation pays for Kjell and the development team to maintain the build tool chain to do this for you (none of that is free, it requires machines, the web site and network bandwidth to do the downloads all of which cost money!) Personally, I would (and have) pay the donation to avoid the work of building, but as I am sometimes a developer, I can’t avoid doing the install, I need to be able to build from source. As noted in my original reply Kjell looked at various alternatives to a pay wall (my words, not his 
) but all of them take a share of the revenue from the donations and where not considered to be practical for the number of donations we were expecting (as at the point the current donation rate was very small.) I think it is fair to say none of us like the donation model, but I spent 3 years trying to interest anyone in helping me re start development with zero results. The Aisler folks (who provide the Fritzing Fab and share a part of the revenue with Fritzing to fund development and keep the web site running which also takes money) managed to succeed at finding Kjell and within 6 months or so get a new release out just as Fritzing was starting to die because the libraries it is compiled with were getting too old for modern operating systems. While I was trying to start development, there were lots of suggestions of forking the source tree and starting a new project. I kept pointing out that what was needed was people to make pull requests for fixes against the current repo and see what happened as I was told if fixes appeared they would try and put out a new release. A very small handful of us did that, and the 0.9.4 release has about 10 fixes in it. Even now there are few pull requests, Kjell and others on the development team are responsible for most of the progress to date. If you (or anyone else reading this) don’t like the donation mechanism then you need to provide a detailed workable alternative. I don’t consider “some projects upload a charged version on windows store that update to latest automatically” a realistic alternative. Kjell who has lots of experience looked at all the alternatives he could think of, and ended up where we are which is succeeding in funding development despite all the complaining. I think all of us would appreciate a better alternative but it needs to be a detailed and workable one because Kjell can do development (which gets my vote ) or can seek the perfect funding solution (and he has already done that and not found one) he probably can’t do both.
Nothing to be sorry about with your english it is perfectly understandable. You can also post in your native language if you like, I then use google translate to read it and try and answer, but you are doing fine in english.
Peter