how to install a source?

[xSoLoYD 13]

Hello M2Dev, I'll probably start by asking a stupid question for those of you who already have experience in this field and have been doing this for a long time and I apologize for this but for 4 days now I've been facing a problem and to make you understand I have an open server that I host at a company I received all the necessary files but in order to be able to modify the server completely I need to have installed those sources that I've heard about in these 4 days I've searched on all possible sites how I can install those sources and different details to do this but I can't understand how this works from what I understand there are 4 sources in total that need to be installed namely the game&DB source binary source and the dumproto source I've looked for these tutorials to be able to do this but unfortunately something doesn't make sense to me and I can't do this can you please help me in this regard so that I can enlighten myself, thank you very much in advance with respect and esteem

Thank you very much for your time 
PS. My English is not that good, please forgive me for any mistakes I make.