contents: integrate best-practice-questions into rest of the docs

contents/algorithms/graph.md

@@ -52,11 +52,11 @@ In algorithm interviews, graphs are commonly given in the input as 2D matrices w
 
 `|V|` is the number of vertices while `|E|` is the number of edges.
 
-| Algorithm            | Big-O                             |
-| -------------------- | --------------------------------- |
-| Depth-first search   | O(|V| + O|E|) |
-| Breadth-first search | O(|V| + O|E|) |
-| Topological sort     | O(|V| + O|E|) |
+| Algorithm            | Big-O                            |
+| -------------------- | -------------------------------- |
+| Depth-first search   | O(|V| + |E|) |
+| Breadth-first search | O(|V| + |E|) |
+| Topological sort     | O(|V| + |E|) |
 
 ## Things to look out for during interviews
 

contents/best-practice-questions.md

@@ -4,6 +4,8 @@ title: Best practice questions
 sidebar_label: 🔥 Best practice questions
 description: The best practice questions to prepare for algorithmic coding interviews by the author of Blind 75 spread across a 5-week schedule
 keywords: [algorithm, coding, interview, questions, leetcode, blind 75]
+displayed_sidebar: docs
+pagination_next: coding-interview-best-practices
 ---
 
 import AlgorithmCourses from './\_courses/AlgorithmCourses.md'
@@ -15,6 +17,12 @@ import InDocAd from './\_components/InDocAd';
   <meta property="og:title" content="Best practice questions by the author of Blind 75 | Tech Interview Handbook"/>
 </head>
 
+:::tip
+
+As of April 2022, I've developed a [12-week study plan](./coding-interview-study-plan.md) which includes a curriculum for revision and practice questions. If you want to customize your own practice questions, I've also developed [Grind 75](https://www.techinterviewhandbook.org/grind75) which is a modern version of Blind 75 that you can customize.
+
+:::
+
 Hey there, the author of Blind 75 here 👋!
 
 Practicing is the best way to prepare for coding interviews. LeetCode has over a thousand questions. Which should you practice? Hence years ago, I curated a list of the most important 75 questions on [LeetCode](https://leetcode.com). Many other LeetCode questions are a mash of the techniques from these individual questions. I used this list in my last job hunt to only do the important questions.