what type of topic should i read?

[50k]

Since there are so many types of book available at the market now, I don't know what are the best book at what are the better topics to read at all.

So what would be the best topics to quickly improve reading skills?

[Keo Somala]

I can suggest some books, like "Steps to Understanding" by L.A. Hill. They have series from Introductory to Advanced Level.
Others are like "Topics for Today" and "FYI=For Your Information". You can find these in some bookstores in Phnom Penh. 

[hmm]

I recommend any books from Scholarstics Inc. They're good for teenagers and young adult learning English.