Today I did a playtest of So1minimald6 that Sophia Bandt posted here yesterday, and it gave an excellent adventure. My scenario was in the universe of X-Files, whit 2 new agents investigating a case of disappearances in a small rural town.

Today I did a playtest of So1minimald6 that Sophia Bandt posted here yesterday, and it gave an excellent adventure. My scenario was in the universe of X-Files, whit 2 new agents investigating a case of disappearances in a small rural town.
The system flowed well, fairly quickly and consistently, but some doubts arose:
1) I'm still confused about attributes, in terms of mechanics. Do they only confer advantage or disadvantage die on the rolls (+1 , or - 1 ), or I understood wrong?
2) After a result "Yes, but", "NO, but", Yes, and ", No, and", must I roll again in the following table to the unfolding of the question, or should I consider the more obvious to the situation, leaving the following table (that one "1-Nothing happens ...") for just when I need ideas on how to continue the adventure?
3) Since at the beggining of the text it is said that I succeed every time I get 5 or 6 in a risky situation, when exactly should I use that listed task difficulty table?
Ok, the main doubts were these. Sophia Brandt, can you help me?
Anyway, it was a very good experience. My actual play was written in a mix of English and Portuguese, so i think it was impossible to decipher. I had a lot of fun. Since it was only the first draft of the system, I'm sure very good things are coming around!