Flame Ogre cannot be special summoned, so Flame Ogre must be Normal Summoned - or Set, then Flip Summoned.
You must tribute 2 monsters to summon one Flame Ogre.
A tribute summon is a form of Normal Summon. So that means you can only tribute summon OR normal summon ONCE per turn.
No, a Flip Summon is not a Normal Summon. You can perform only one Normal Summon per turn, but can do multiple Flip Summons in one turn, without affecting your ability to Normal Summon. If a card triggers only from Normal Summon, then it will not trigger from a Flip Summon, etc.
Yes, you are able to normal summon then fusion summon, because the fusion summon is a special summon
no because tribute summon is just a different kind a normal summon
Under normal circumstances, you are only allowed one Normal Summon per turn. A Tribute Summon is a kind of Normal Summon, meaning that if you wanted to do both in one turn, you'll need an effect that specifically lets you, like Double Summon. Note that a special summon that requires tribute, is not a Tribute Summon. You can perform those in the same turn as a Normal Summon.
No, a Synchro Summon is a kind of Special Summon.
Yes, you can, as a Synchro Summon is a special summon, you can perform a Normal Summon on the same turn as one or more Synchro Summons.
Yes it is, it was in Cyberdark Impact.
"The Wicked Avatar" is Tribute Summoned. However, to answer your question, a Tribute Summon is a Normal Summon so the answer is both.
yes, you can normal summon Helios trice megistus
Double Summon allows you to have an extra Normal Summon. This Normal Summon is no different to your usual once-per turn Normal Summon. If you've got two monsters to tribute, then sure, you can tribute them for an 8-star monster.