And, which lens should I buy?
Of course this is a topic that could take hundreds of pages and it will depend on which kind of photography you want to do. I thought it was a good idea to share which lenses I do use, so you can understand what can be done with each of them.
Both of my lenses are primer lenses, which means that they have no zoom. They have a fixed focal length, so if you want your subject to be closer, you need to move closer. This may feel weird at the beginning, but it makes you think much more on framing and composition, making of photography a constant challenge.
My first lens and the one with which most of my pictures are taken is the Sony FE55mm 1.8:
Later I acquired a wider lens, the Sony FE 24mm 1.4. This gave me some more versatility in my photography, specially on the landscape and night photography, as it is an extremely fast lens.