Please note that there is much confusion over the meaning of "World to Come - Olam HaBa" and I have included here any instance in which the Talmud opts for the term "Olam HaBa."
Mitzvot for which one has reward in this world and in the World to Come: Shabbat 127a
The great reward, in this world and in the World to Come, for a "light" Mitzvah: Menachot 44a
In the World to Come the Good in everything will be obvious, so that there will be no need for the Blessing of "The Judge of Truth," only "The Good and Beneficient": Pesachim 50a
The Evil Inclination testifying against its host in the World to Come: Succah 52b
The World to Come as a World without physical desire or jealousy or anger or competition; only the Righteous Enjoying Manifestation of Gd's Presence: Berachot 17a Gd's Name will be written and pronounced in the identical "Yud"-"Hay" form: Pesachim 50a
The light for the Righteous entering the World to Come is like the Morning Light: Pesachim 2a Torah Scholars will not find any peace, even in the World to Come: Moed Katan 29a
Light will be plentiful in the World to Come: Pesachim 50a
Understanding of [difficult sections of Torah such as] Leprosy and Structures Containing Death-Impurity: Pesachim 50a
The rich and important will be taken lightly, while those who are downtrodden in this World will be on top: Pesachim 50a
Praised is one who arrives there with his Torah learning at hand: Pesachim 50a
People killed by the king have the highest place in the World to Come: Pesachim 50a
The Harugei Lud in the World to Come: Pesachim 50a
Crown for those who Give Charity in secret: Shabbat 104a
Whether the deceased communicate with each other: Berachot 18b-19a
Whether the dead are aware of what is happening in this world: Berachot 18b-19a
Who is great in the next world, according to reports by Titus, Bilam and Jews who sinned while here on earth: Gittin 56b-57a
"Shortcuts" to the World to Come
General Issues of "Shortcuts": MYT Berachot 1:6:6
One's Rebbe is the one who brings him into the World to Come: Bava Metzia 33a
Power to promise someone else a share in the World to Come: Taanit 29a
Earning a share in Olam HaBa as a Reward for having one more Mitzvah than transgression: Kiddushin 39b
Entry of a Nochri into Olam HaBa: Taanit 29a
Olam HaBa is only acquirable via Suffering: Berachot 5a
For Shema and for the Amidah: Berachot 16b Linking Prayer of Redemption to the Amidah at the Evening Prayer: Berachot 4b, 9b
Reciting Ashrei (thrice) daily: Berachot 4b Honoring one's parents: Shabbat 127a; Kiddushin 39b, 40a Acts of Generosity: Shabbat 127a; Kiddushin 39b, 40a Living in Israel: Pesachim 113a Keeping Peace: Shabbat 127a; Kiddushin 39b, 40a Housing Guests: Shabbat 127a; Kiddushin 39b Raising one's children to learn Torah: Pesachim 113a Making Havdalah on wine left over from Kiddush: Pesachim 113a
One can tell whether a person is a member of the World to Come, by the nature of their Eulogy: Shabbat 153a
Acquired through Learning Torah: Bava Metzia 33a
Acquired through Learning Torah Laws: Megillah 28b R' Pereida had a student who needed to have a lesson repeated 400 times in order for him to learn it properly. Once, the student still didn't understand, and the student explained it was because he had heard someone telling R' Pereida he would have to get R' Pereida for a Mitzvah later, so that the student had his mind on R' Pereida having to leave. R' Pereida then sat and taught him the lesson 400 more times. A Divine Voice emerged and offered R' Pereida 400 years of extra life, or merit for the next world for his generation. R' Pereida took the latter, and so Gd gave him both: Eruvin 54b
A person who thinks before he acts, weighing the benefit of a Mitzvah against the loss due to a transgression, will merit to see the time of the Messiah: Sotah 5b
The Garden was created before the Universe was: Pesachim 54a; Nedarim 39b "In the future" there will be a circle of the righteous in the Garden of Eden, and Gd will be among them so clearly that each of them will be able to point: Taanit 31a
The Garden of Eden located on Earth: Eruvin 19a
The Openings of the Garden: Eruvin 19a
The Heavenly Study-Hall - Yeshivah Shel Maalah / Metivta d'Rekia
Shemuel's father in the Heavenly Study Hall: Berachot 18b
Shemuel getting Levi into the Heavenly Study Hall: Berachot 18b
Can be earned by Giving business to a Torah Scholar: Pesachim 53b
Those in the next world being aware of the Torah study of those in this world: Bava Metzia 62b-63a