My book "Topology Without Tears" is available in
I have also prepared ten short videos to accompany the book. The videos expand material in the book. Of particular importance are the four videos on "Writing Proofs in Mathematics". I urge you to watch these videos. It is indicated in the book where it is best to watch each video.
There is a facebook group called "Topology Without Tears Readers" where readers of the book can communicate with each other.
But this is definitely not a place to ask others to solve your homework problems. If you ask questions like "How do you solve the problem ...." your post will be removed and you will probably be blocked from this group.