Algebraic Curves reference I am an undergraduate student. I finished a Galois theory course. I started to read Fulton`s book Algebraic Curves.I  am doing self-study. I found it difficlt to understand from 2nd chapter onwards. The notes I find are too concise. Are there some lecture videos, or expanded notes.so that I can understand it easily?

Algebraic geometry is a hard subject, and Fulton's book is one of the easier ones out there. Possibly Undergraduate Algebraic Geometry by Miles Reid might be more accessible, and you could take a look at that. 
But really, Fulton is a good introductory book. It's not a sort of grab-bag intro like Reid, but an actual, honest to goodness, introduction to commutative algebra and the algebraic geometry of curves. However, you are right that it is very dense. Unfortunately, there is no "easy way" to learn math. You simply have to work through it. The best thing you can do is go slowly and post any questions you might have on here. If you did well in a course on Galois theory, I have no doubt you can understand Fulton's book if you put your mind to it. 
