Publishing first laravel blogging site

I am done with the development of the site and now I want to make it live and its my first time. So if someone can guide me or send some link about proper guidance, it'll be great.

I have some question in my mind I would really appreciate if someone can clear my confusions.

1: Do I have to upload the full project folder on my hosting site? 2: If I want to make changes after making my site is live, do I have to make changes on my local machine or I can directly change files online? 3: which is most reasonable site to buy domain and hosting 4: If I want to add google adsense block of code for ads later, can I do that? Thank you in advance