This is your first post, but for more clarity you should look at some other references such as the one provided by Mitchell
Now to get your first Bitcoin you don't need to use a computer or have to mine, by buying directly from your local Exchange or buying on another Marketplace, it can be done easily.
There are many references available, on google, Youtube and all social media and in this forum in detail and also technically you will get an explanation.
Use the search Tools available on this forum, or Use the best search Tools and Bitcointalk Archive such as
Talksearch Created by NotATether And
Bitlist created by TryNinja