If you like Harry Potter then...

1.
The Lightning Thief (Percy Jackson and the Olympians, #1)
The Lightning Thief (Percy Jackson and the Olympians, #1) 4.31 avg rating — 3,336,657 ratings
2.
The Lost Hero (The Heroes of Olympus, #1)
The Lost Hero (The Heroes of Olympus, #1) 4.29 avg rating — 919,891 ratings
3.
Thorn Ogres Of Hagwood (The Hagwood Trilogy, #1)
Thorn Ogres Of Hagwood (The Hagwood Trilogy, #1) 3.79 avg rating — 398 ratings
3.
The Undrowned Child
The Undrowned Child 3.84 avg rating — 1,239 ratings
5.
The Dark Portal (The Deptford Mice, #1)
The Dark Portal (The Deptford Mice, #1) 3.83 avg rating — 2,603 ratings
6.
Magyk (Septimus Heap, #1)
Magyk (Septimus Heap, #1) 3.86 avg rating — 124,078 ratings
6.
The Alchemist's Cat (The Deptford Histories, #1)
The Alchemist's Cat (The Deptford Histories, #1) 3.98 avg rating — 956 ratings
8.
Fablehaven (Fablehaven, #1)
Fablehaven (Fablehaven, #1) 4.14 avg rating — 174,967 ratings
8.
The Whitby Witches (The Whitby Witches, #1)
The Whitby Witches (The Whitby Witches, #1) 3.91 avg rating — 1,666 ratings
10.
The Girl Who Drank the Moon
The Girl Who Drank the Moon 4.12 avg rating — 111,142 ratings
11.
The Bad Beginning (A Series of Unfortunate Events, #1)
The Bad Beginning (A Series of Unfortunate Events, #1) 4.02 avg rating — 559,228 ratings
12.
Obsidian (Lux, #1)
Obsidian (Lux, #1) 4.13 avg rating — 293,259 ratings
13.
The Ruins of Gorlan (Ranger's Apprentice, #1)
The Ruins of Gorlan (Ranger's Apprentice, #1) 4.26 avg rating — 171,546 ratings
14.
The Immortals (Immortals, #1-4)
The Immortals (Immortals, #1-4) 4.59 avg rating — 8,244 ratings
15.
The Chrestomanci Series Collection (Chrestomanci, #1-3)
The Chrestomanci Series Collection (Chrestomanci, #1-3) 4.66 avg rating — 58 ratings