I am a first Semester studyng Mathematics and i find that oftentimes I am am unable to solve a problem (in Analysis I) due to a lack in skill in simplifying, rewriting etc. various expressions to prove a desired result. I guess the best way to get better at this is to practice, so my question is if you know a good resource for exercises that focus on training these kinds of skills.
I am not sure if this question is appropriate so I will delete if it doesn't fit and second I only learned English in school so please forgive grammar mistakes.
