The recommended way to obtain a copy of Microweber is from GitHub. That, of course, requires you to have git installed.
One way to clone it is with this command:
git clone --depth 1 https://github.com/microweber/microweber.git mw_site
That will make a shallow copy of the repository (only the latest version) in a directory caled
Then you can obtain the source and resolve dependencies (i.e. skip next step) with one command:
composer create-project microweber/microweber mw_site
composer install in the root directory of your installation.
If everything goes smooth you are good to go.
In many cases you might want to be able update the code base with a single command.
To acheive this just run
composer update in the root directory of your installation.
Issues With Install/Update
In the real world things go wrong. If you run into problems while installing or upgrading Microweber you can see the troubleshoot guide or ask online. We're probably on the same sites as you.