diff --git a/src/shared/types/Course.ts b/src/shared/types/Course.ts
index 2fdb42b1..3741fdf9 100644
--- a/src/shared/types/Course.ts
+++ b/src/shared/types/Course.ts
@@ -25,7 +25,9 @@ export type Semester = {
     /** The year that the semester is in */
     year: number;
     /** The season that the semester is in (Fall, Spring, Summer) */
-    season: string;
+    season: 'Fall' | 'Spring' | 'Summer';
+    /** UT's code for the semester */
+    code: string;
 };
 
 /**
diff --git a/src/views/components/injected/CoursePopup/CourseHeader/CourseButtons/CourseButtons.tsx b/src/views/components/injected/CoursePopup/CourseHeader/CourseButtons/CourseButtons.tsx
index de54ac80..3d3ad3f1 100644
--- a/src/views/components/injected/CoursePopup/CourseHeader/CourseButtons/CourseButtons.tsx
+++ b/src/views/components/injected/CoursePopup/CourseHeader/CourseButtons/CourseButtons.tsx
@@ -53,6 +53,14 @@ export default function CourseButtons({ course }: Props) {
         openNewTab({ url: url.toString() });
     };
 
+    const openTextbookURL = () => {
+        const { department, number, semester, uniqueId } = course;
+        const url = new URL('https://www.universitycoop.com/adoption-search-results');
+        url.searchParams.append('sn', `${semester.code}__${department}__${number}__${uniqueId}`);
+
+        openNewTab({ url: url.toString() });
+    };
+
     return (
         <Card className={styles.container}>
             <Button
@@ -72,7 +80,7 @@ export default function CourseButtons({ course }: Props) {
                 </Text>
                 <Icon className={styles.icon} color='white' name='grading' size='medium' />
             </Button>
-            <Button type='tertiary' className={styles.button}>
+            <Button onClick={openTextbookURL} type='tertiary' className={styles.button}>
                 <Text size='medium' weight='regular' color='white'>
                     Textbook
                 </Text>
diff --git a/src/views/lib/CourseCatalogScraper.ts b/src/views/lib/CourseCatalogScraper.ts
index 2fc0f69c..50469adb 100644
--- a/src/views/lib/CourseCatalogScraper.ts
+++ b/src/views/lib/CourseCatalogScraper.ts
@@ -1,5 +1,5 @@
 import { Serialized } from 'chrome-extension-toolkit';
-import { Course, Status, InstructionMode, ScrapedRow } from 'src/shared/types/Course';
+import { Course, Status, InstructionMode, ScrapedRow, Semester } from 'src/shared/types/Course';
 import { CourseSchedule } from 'src/shared/types/CourseSchedule';
 import Instructor from 'src/shared/types/Instructor';
 import { SiteSupport } from 'src/views/lib/getSiteSupport';
@@ -71,16 +71,6 @@ export class CourseCatalogScraper {
             const [courseName, department, number] = this.separateCourseName(fullName);
             const [status, isReserved] = this.getStatus(row);
 
-            // TODO: get semester from somewhere
-            const year = new Date().getFullYear();
-            const month = new Date().getMonth();
-            let season = 'Fall';
-            if (month >= 0 && month < 5) {
-                season = 'Spring';
-            } else if (month >= 5 && month < 8) {
-                season = 'Summer';
-            }
-
             const newCourse = new Course({
                 fullName,
                 courseName,
@@ -96,11 +86,7 @@ export class CourseCatalogScraper {
                 instructionMode: this.getInstructionMode(row),
                 instructors: this.getInstructors(row) as Instructor[],
                 description: this.getDescription(document),
-                // TODO: get semester from somewhere
-                semester: {
-                    year,
-                    season,
-                },
+                semester: this.getSemester(),
             });
             courses.push({
                 element: row,
@@ -213,6 +199,43 @@ export class CourseCatalogScraper {
             .filter(Boolean);
     }
 
+    getSemester(): Semester {
+        const { pathname } = new URL(window.location.href);
+
+        const code = pathname.split('/')[4];
+        if (!code) {
+            throw new Error('Semester not found in URL');
+        }
+
+        let year = Number(code.substring(0, 4));
+        let seasonCode = Number(code.substring(4, 6));
+
+        if (!year || !seasonCode) {
+            throw new Error('Invalid semester found in URL');
+        }
+
+        let season: Semester['season'];
+        switch (seasonCode) {
+            case 2:
+                season = 'Spring';
+                break;
+            case 6:
+                season = 'Summer';
+                break;
+            case 9:
+                season = 'Fall';
+                break;
+            default:
+                throw new Error('Invalid season code');
+        }
+
+        return {
+            year,
+            season,
+            code,
+        };
+    }
+
     /**
      * Get the full name of the course from the course catalog table row (e.g. "CS 314H - Honors Discrete Structures")
      * @param row the row of the course catalog table
diff --git a/todo.md b/todo.md
index d7479f61..503dceb1 100644
--- a/todo.md
+++ b/todo.md
@@ -8,7 +8,7 @@ Last Updated: 03/4/2023
 -   [x] injecting plus header and buttons
 -   [x] auto loading next pages
 -   [x] showing course popup
--   [ ] RMP, eCis, Textbook, and Syllabus buttons
+-   [x] RMP, Textbook, and Syllabus buttons
 -   [x] displaying professor information on popup
 -   [ ] saving courses
 -   [ ] Multiple schedule support
@@ -17,15 +17,15 @@ Last Updated: 03/4/2023
 -   [ ] Updated Easter Egg Messages
 -   [ ] links to RIS, Registrar, Degree Audit in browser action
 -   [ ] copy unique id quickly from browser action
--   [ ] Clickable links to buildings
+-   [x] Clickable links to buildings
 -   [ ] Count how many hours and # of classes in schedule
 -   [ ] Conflict highlighting
 -   [ ] Tooltip that says which classes conflict, maybe suggest a different section or time that doesn't conflict
 -   [ ] import / export schedules from JSON file
 -   [ ] Search for classes from within extension
 -   [ ] Grade distribution
--   [ ] Course description
--   [ ] Highlight and use rich text to make course description more readable
+-   [x] Course description
+-   [x] Highlight and use rich text to make course description more readable
 -   [ ] calendar
 -   [ ] calendar file export
 -   [ ] save as png