You must sign up for both lecture and a recitation section. A recitation is a small group and is usually led by a TA. I don't know what the recitation for this class involves but usually they either go over class material, examples, or possibly even give quizzes.
When I looked at the course listing, there were loads and loads of recitation courses compared to lecture courses. Does it matter which recitation we sign up for due to lecture or instructor? Or do we just pick the one the with times that suit us most?
Recitations are in the system as the credit bearing section, so you must sign up for a recitation first and a lecture second. For math you must select a recitation within the group of your lecture. That is to ensure that all recitations will have students from only one professor as opposed to multiple professors.
Math TAs are notorious for not speaking good English.
LPS courses are designed for adult learners who are taking at most two courses per semester and have full time jobs. Unlike most intro courses, the LPS courses generally require attendance. If you ever have a conflict, including with another course, the LPS course takes precedence. I would recommend staying away from LPS courses if at all possible. The regular sections are usually better in terms of learning anyway. Also it is a pain in the neck to have a class from 6-9. You'll miss a lot of socializing, which is especially important for first semester freshmen. It's different for upperclassmen but freshmen really do need to get their social footing down, more than they think.
^ I get that I should put the math recitation then the lecture. Though, say I'm taking Chem 101 with the associated lab and recitation. The actual course bears the 1 cu, the recitation is 0, and the lab is .5?? What should be my order?