STM32 and SD card (FATFS and SPI)

I'm starting to work with a stm32l0 board and it was fine until I had some more interesting functions to use. I never read SD card out of windows, I found Pins links and started to read about SPI which could be a suitable solution for our prject (I think).

But the issue is in the programming part, every tutorial I find skips basics. I uses STM32CubeMX to generate code with HAL and FATFS but I don't know how to initialize and then use my SD card. I try to paste code I find but I can't debug it then and there is no point just pasting someone's code.

Thanks and sorry for my grammar,

EDIT : I came here after this post : link I'm now trying to access a SDcard with a stm32l0 controller. I've been advised to use FATFS to read the device but what I understood is that the library needs a way to access the data : SPI. I selected FATFS and SPI2 in STM32CubeMX and imported the project in Eclipse (I'm using HAL and the SW4STM32). On the pin description I saw MISO,CK,MOSI in CubeMX which were on pins PB12,PB13,PB14. But in the main file those pins are never used.
Another thing affraid me in the post I mentionned : the SDcard needs to be initialized in a way a never heard of.
I don't know if you need to have the SPI_Init and GPIO_Init functions, I will edit this message if you need it.
I will edit anyway in the morning because the post must be so confuzed, my brain is burning up i'm sorry. Ask if you need precision on whatever. Thanks !