Latex in 5 minutes, a quick guide

1) Download and install MikTeX

2) Download and install TexStudio

3) Download and open thesisLATEX.rar (if you are writing a Bachelor, MSc or PhD thesis at any university).

Alternatively download and open reportLATEX.rar (if you are writing an executive report at any company). 
Please note that the steps below are referred to the thesis template, but the report template is even easier. 

4) Copy the folder ThesisLATEX where you like it. (e.g. desktop)

5) Inside the folder \desktop\ThesisLATEX, open thesis.tex with TexStudio.

6) Click on the double green arrow at the top of the window (the button is besides a single green arrow)

7) Click install to everything (if asked)

8) Your pdf will appear on the right. The pdf file is updated inside the folder \desktop\ThesisLATEX.

9) Now change something on the source file (on the left-hand part of texstudio, full of unfriendly code)

10) Click again the double green arrow and check your changes.

That's it.

If you want to edit the chapters, you should open and edit the file chapterXX.tex inside the subfolders.

Hint: try ctrl+click on the code or on the pdf

For any trouble, before trying anything else, I personally recommend the button in menu tools -> Clean Auxiliary Files

Sources : http://www.antonellocherubini.com/latex-in-5-min.html