Yes, it can be both. Not at first. Because it is almost impossible or difficult to do file editing , code editing , server configuration etc. by phone. It is also difficult to download and modify various scripts from the phone uploaded to the server. Many servers do not run on the phone. So it is foolish to go to the site by phone. Secondly, yes you can: If you think that you don't need much customization , then you have to reply to the post. Then download the ready script. Then you can take the time to sit down and configure the work by downloading the best effective apps. Try to upload to the server , you can also take the help of different mobile apps. Do everything this way. It will only take time , annoyance will come and you may not be able to understand the full features. But you will get the basic site. Where you will find all the questions answered. And if you get ready software , ready theme etc., then you will get a beautiful site.