Here are a basic set of steps to install and run Boa Constructor on any system.
Go to the Download page and select a Python-and-wxPython combination you want to work with and download it. Once downloaded, save it to a folder/directory you have access rights to.
Unpack the Boa Constructor zip file.
Install the required version of Python. Ensure there is an entry for Python in your PATH Environment Variable
Use PIP to install the required version of wxPython
Open a terminal and navigate to the location where Boa Constructor has been unpacked. Ensure you can see Boa.py file in the current directory
To start Boa Constructor, use the command 'python Boa.py'
This is not an exhaustive set of instructions. Variations exist eg if you already have python installed then skip that step.
If you need help with a particular step, try searching the internet for help.