Can I develop withMagento2 on localhost XAMPP (under Windows) before I release my shop on a hosting?
I've done it. Not the best experience but totally doable.
And how do I install a new theme, extension and so on?
I followed the component manager guide, but I cannot change themes o languages...
How did you do?
thank you.
Frankly, if you don't have a required skill set, then with great difficulty.