1. The Gemara cites two versions of a ruling of Shmuel regarding sleeping under a canopy of a bed in a Sukah.
2. Rabah bar Rav Huna ruled differently from both of these two versions (#1).
3. The Gemara explains what constitutes valid Sechach.
4. There is a dispute about whether a Lulav must be bound together with the myrtle and willow branches.
5. There is a dispute about what the verse refers to when it says, "for in Sukos I had Bnei Yisrael sit."
A BIT MORE
1. In the first version (10b), Shmuel says that one may sleep under it even though it forms a roof, as long as it is not ten Tefachim high. In the second version, Shmuel says that one may sleep under it since it has no roof, even if it is higher than ten Tefachim.
2. He ruled that one may sleep under it even if it has a roof and even if it is higher than ten Tefachim. This is because he agrees with Rebbi Yehudah that a temporary shelter (i.e. the canopy) cannot nullify a permanent shelter (i.e. the Sechach of the Sukah).
3. Something that grows from the ground and does not become Tamei (and is no longer attached to the ground) may be used as Sechach.
4. Tana Kama: It does not have to be bound with them, but it is a special Mitzvah to do so in order to beautify the Mitzvah. Rebbi Yehudah: It must be bound together with the myrtle and willow branches.
5. Rebbi Eliezer: The verse refers to the Ananei ha'Kavod (Clouds of Glory) that hovered over and around Bnei Yisrael. Rebbi Akiva: The verse refers to actual Sukos, similar to ours, in which Bnei Yisrael lived in the desert.