diff --git a/README.md b/README.md
index 9f84413..e517987 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@
 > as a Software Development Engineer at Amazon](https://startupnextdoor.com/ive-been-acquired-by-amazon/?src=ciu)!
 > You probably won't have to study as much as I did. Anyway, everything you need is here.
 >
-> The items listed here will prepare you well for in an interview at just about any software company,
+> The items listed here will prepare you well for an interview at just about any software company,
 > including the giants: Amazon, Facebook, Google or Microsoft.
 >
 > *Best of luck to you!*
@@ -1669,7 +1669,7 @@ software engineer, and to be aware of certain technologies and algorithms, so yo
     - [ ] [CS 61B Lecture 39: Augmenting Data Structures](https://archive.org/details/ucberkeley_webcast_zksIj9O8_jc)
 
 - ### Balanced search trees
-    - Know least one type of balanced binary tree (and know how it's implemented):
+    - Know at least one type of balanced binary tree (and know how it's implemented):
     - "Among balanced search trees, AVL and 2/3 trees are now passé, and red-black trees seem to be more popular.
         A particularly interesting self-organizing data structure is the splay tree, which uses rotations
         to move any accessed key to the root." - Skiena