How to change File & Folder Permissions (WordPress)

Gand mara pora samjaya kr

still i don't know how to find my host, username and password for FTP, even i visited the official website but could'nt find anything, can anyone help

I want to secure my media folder in Wordpress of my website, meaning images or documents inside media folder should not appear as a google search result. What should I do? Thanks in advance.

I have a wordpress site and I want to create a folder in public html that would be used to access documents from a remote location (word, excell, exe...) but when I create the folder I can't access it, I guess wordpress blocked access through the htacess file, how allow access

I got stuck at one point in my website I wanna make a tab section have 19 types of book categories and each category have books at least 10 and one have 30 and each book have inside l10 to 20 lesson and then at there I paste the short code of 3D pdf.
its look like the PC folders having another inside and that inside folder have another but I don't know how to do it one way is to attach pages to each tab . and page have 20 book and then when we open each book it have 20 lessons inside and then any one would view and download the pdf . how to I do this please I try a lot but that's not working I try to make one tabs of categories and make another tabs to CSS ID with that but I can't get the folder inside folder look please help me

Very straightforward but I still don't know how to get the server details. Please help

I can't find or open public html

very helpful. Thanks.