I am here to welcome you to this course, Sequences and Series. [MUSIC]. I'm offering four resources to help you succeed in this course. The first resource is this, these videos where you can see the concepts of the course worked out. The second resource is the textbook, where you can read in detail the proofs, the definitions, and see some examples worked out. The third resource is the online homework. You can access this right in Coursera and you can test your knowledge to figure out what parts of the course you're understanding really well and what things you still need to work on. And the fourth resource is each other. The course forum, where you can talk to other students and to me about the ideas in this course. I hope with these four resources, we can all make it through this course successfully. [SOUND]