Overview of Representation theory

I was invited to give several lectures on representation theory for my undergraduate friends. Here are the slides. There would be some uploading for sake of mistakes or typo.

Lecture 0  The Schedule
Lecture 1  Structure of algebras and groups (I) Slide: Lecture_1(20200709).pdf  Remark: semisimple algebras Date: 2020 July 9
Lecture 2  Structure of algebras and groups (II) Slide: Lecture_2(20200725)(2).pdf Remark: Lie groups and Lie algebras Date: 2020 July 13
Lecture 3  Representation of finite groups (I)  Slide: Lecture_3(20200716).pdf  Remark: general results Date: 2020 July 16
Lecture 4  Representation of finite groups (II) Slide: Lecture_4(20200720).pdf Remark: symmetric group Date: 2020 July 20
Lecture 5  Representation of Lie algebras (I) Slide: Lecture_5(20200725)(2).pdf Remark: general results Date: 2020 July 25
Lecture 6  Representation of Lie algebras (II) Slide: Lecture_6(20200730).pdf Remark: special linear algebra Date: 2020 July 28
Lecture 7  Structure of algebras and groups (III) Slide: Lecture_7(20200720).pdf Remark: associative algebras Date: 2020 July 31
Lecture 8  Representation of associative algebras (I)  Slide: Lecture_8(20200803).pdf Remark: Auslander--Reiten quivers Date: 2020 August 3
Lecture 9  Representation of associative algebras (II)  Slide: Lecture_9(20200803).pdf Remark: hereditary algebras Date: 2020 August 3

I hope there will be more such lectures like ``overview of algebraic topology'', ``overview of number theory'', ``overview of geometry'' etc showing the big picture and presenting the knowledge an undergraduate student could know.