Shalom and thank you for your questions. One of your questions concerns placing sticky notes on the Torah scroll to mark the parasha and the aliyot. One cannot say that it is uncategorically forbidden, but it is definitely preferable to try not to do this if possible.
The other question is a little more complex. A non-Jew should not be given tasks like rolling a Torah scroll or other related tasks. This is because these tasks are designated for Jews as an active part of their unique role. The Torah in its entirety, meaning Written Law (Five Books of Moses, the Prophets, the Megillot, Eccelsiastes, the Book of Proverbs…) and Oral Law, (Talmud, Midrash, and peripheral books that codify Jewish law a.k.a Halacha…) was given to the Jewish people as their special ‘toolbox’ for performing their task in the world. The Torah lists Seven Noahide Laws which are designated for non-Jews, in order for them to perform their task in the world. These include not kidnapping or murdering, setting up courts of justice, not eating the limb of a living animal, not committing idolatry, incest or adultery, and more. In each instance, we are given the soul powers that are suitable for the role.
The Hebrew word for commandment – ‘Tzivui’, is etymologically related to the word for connection, ‘tzavta’. Years ago in a talk on the current Torah portion, Tzav, the Lubavitcher Rebbe, Rabbi Menachem Mendel Shneerson, explained that according to Chassidic teaching, the very fact that G-d coþmmanded us to do something, connects us to Him and gives us the spiritual ability to do it. Thus the spiritual essence of a Jew is directly related to the commandments he/she is designated to perform. In the same way, a non-Jew’s spiritual essence is related to the Seven Noahide Laws that he/she is designated to perform. It is not necessary for a non-Jew to perform commandments that were given to Jews, because they are not related to the essence or task of the non-Jew.
There is a story about a wealthy person who was traveling, accompanied by his wagon driver, and had to stop in a particular town for Shabbat. When they arrived at the local inn, the wealthy man got himself ready for Shabbat and set out to go to the synagogue. On the way however, he met up with a person who was in quite a difficult situation. His carriage had sunk into deep mud, and he couldn’t get out. The wealthy man was happy to try to help, but the process took a long time and was very difficult, since he wasn’t used to strenuous physical activities in the way that his driver was, and he was hampered by being dressed in his Shabbat finery. Meanwhile the wagon driver had arrived for Friday night services, and saw that there were several people who needed invitations for the Friday night meal. Happy to perform the mitzvah of receiving guests, as he had seen his boss do countless times, the wagon driver invited them all to come back to the inn and share his meal. The only problem was that he had a limited amount of food, and thus no one became satisfied with the meal.
It was a case of swapped identities. The wealthy man and the wagon driver could have theoretically contributed much more had they used the resources they were individually blessed with.
Also in our case, there are areas of spiritual activity designated for Jews and not for non-Jews, and vice versa. Every individual can and should contribute to the refinement of world in their unique way. As it says in Genesis 12:3 “…and through you shall be blessed all the families of the earth”. When Jews perform the commandments of the Torah as they should, this brings blessing to all the nations of the world.
