There is clear documentation on how to start for each board. Not sure which board you have, but let’s use the Redboard as an example. On the product page of that board https://www.sparkfun.com/products/15444 in the middle, righthand side is a tab “DOCUMENTS”. On that tab select ‘hookup Guide’ and it will show a step by step what to do.
If you can’t find the answer, can you be a bit more precise on what is missing so we can help