The Laws of Yom Tov vol.4,no.19
Transferring objects One may transfer objects from a private domain to a public domain for the needs of Yom Tov on Yom Tov. One is also allowed to carry in a public domain even in a city which does not have an eiruv. For example one may carry his siddur to shul on Yom Tov and if he requires it for any reason he can bring it back home. (The definitions of public and private domain are too detailed to fully explain in this issue.) Even though transfering objects is permitted one should refrain from carrying heavy loads in the same manner as he would during the week.
Customs of Shavuos
Maariv: In order that the forty ninth day of the Omer finish in its entirety, we daven the maariv of Shavuos only when it is certainly night.
All night learning: There is a long standing custom to stay awake the first night involved in learning Torah. Some have the custom to follow a specific order of study called Tikun Leil Shavuos. One should be careful not to over extend oneself by staying awake all night and thereby not fulfill other mitzvas properly the next day.
Blessings of the morning: If one stayed up the entire night he should recite the blessing Al netilas yadayim only after relieving himself before the morning davening. He should then also say Asher yatsar. He should say the blessing on his talis having in mind to apply the blessing to his talis katan. One should hear Bircas Hatorah, Elokai neshamah, and Hamaavir sheinah from someone who slept during the night or during the afternoon before Yom Tov.
Dairy foods: Many people have the custom to eat dairy foods sometime during Shavuos. Some eat an entire dairy meal. Others first eat a dairy meal on which they recite Bircas Hamazon, and after a break they eat a meat meal. The bread used for the dairy meal should not be used at the meat meal. Some just make kiddush and eat dairy cakes. In such a situation one should take care that the cakes have enough flour content to consider that the kiddush is made in a place of a meal. One should consult a Rav for practical guidance in this matter.
Hallel: The complete Hallel is recited on both days.
Ruth: The scroll of Ruth is read on the second day of Shavuos.
