What is “Ads codes”? Sorry, I do not know. 
Well, right now I feel like a have learned a great of primary front-end design. I think the next step for me is to advance my JavaScript skills through React and Angular. Afterward, likely going to learn machine learning with Python or MongoDB. 
Thank you for all the kind words! 
Let me first explain how I use FCC… I mainly use it because of the forums now, but also because of the projects. I think it is helpful going over the lessons but as I was working on the JavaScript Section on FCC, I was still finishing the Responsive Web Design Projects.
Firstly, you NEED to learn CSS Flexbox and CSS Grid. FCC does a decent job but I recommend some reinforcement from other sources: YouTube is probably your best bet.
Here are two great videos from two amazing content creators:
Next, I came across a fellow camper’s tribute page. It included advanced concepts like BEM and SCSS. I depend on these two things SO MUCH! Here is a link to the forum post.
And I did some googling and learned how to take advantage of SCSS to make writing CSS more elegant and versatile. Here is a free course on Udemy on SASS.
If you want to see what I learned, I explain it in the read me file of this GitHub Repository of my tribute page project. 
Finally, here I am!
I wish the best luck to you! Happy Coding!