I discovered web design about 5 years ago.
The biggest problem was not getting lost in the incredibly massive amount of information. I will try to pack the minimum that you just need to deal with if you want to move into this area.
1. Colors
First thing you need to learn is how to choose color schemes and here are a couple of links for this: https://blog.hubspot.com/marketing/color-theory-design; https://coolors.co/
But for those who are new to design, I can advise the use of ready-made successful color solutions by more professional web designers.
2. Fonts
Fonts are complicated. This is a whole science, the secrets of which you can discover during your entire life. But there is a little trick. Once optimal font combination solutions were chosen. Here is a link to some successful combinations that you can use at first, and there are really plenty of them for a beginner. https://www.canva.com/font-combinations/; https://justcreative.com/2019/01/17/professional-font-combinations/; https://fontpair.co/
3. Composition
Composition, for me, is the main criterion for visual pleasantness. If the composition is harmonious, it is already 50% success. Therefore, I highly recommend reading this article: https://www.canva.com/learn/visual-design-composition/
4. Trends
In order not to reinvent the wheel, it is always useful to watch and learn from the best in your field. In design, it is essential to stay up-to-date, follow trends and just be able to correctly use other people's already successful developments. Here are a few sites that can help with this. www.pinterest.com; www.behance.net; dribbble.com; www.awwwards.com; www.cssdesignawards.com
5. The final tip
If you have already undertaken web desidn, do not be lazy. Consider the following questions: what is this site for? for whom is this site? why is it needed at all? and what are its goals? Next, proceed to the development of the backbone of the site and so on. Look for references (analogs are direct and not direct). And just work and learn and everything will work out.