Tribute summons are performed in the main phases, as are synchro summons. So if you have an attack phase and attack with one monster, the only way you can use it as tribute for a tribute summon (or send it for a synchro summon) is to enter Main Phase 2. If you do this, then you won't be able to declare an attack with the new monster since you have left the battle phase. The only thing you could do really is use an effect that can Special summon while you are still in the battle phase.
You do.
No you choose a new target and plz read the rule book.
Only if it has an effect that lets it attack more than once per turn, like Asura Priest does.
Yes, this is what you normally do since you can't place them in face down attack position.
Yes. If the tribute is for a Tribute Summon, then you can't attack with any monster again afterwards, since this Summon will occur in Main Phase 2. If the tribute is for a card effect and resolves during the Battle Phase, then you can attack again with another monster, since it would still be the Battle Phase.
Yes, this is legal. You have two main phases, one either side of the battle phase, there is no rule that says a monster that attacks can't be tributed, or that attacking stops you summoning. You can attack with a monster, then tribute it for a tribute summon in main phase 2.
You do.
No you choose a new target and plz read the rule book.
Assuming the defending monster is also in attack position, both monsters will be destroyed.
You can attack with a monster and then tribute it in the same turn, yes. Obviously if you tribute it first, then it can't attack unless you've got a way to bring it back to the field.
Yes, you can attack with the Tribute Summoned monster unless a card effect tells it not to or it is after the Battle Phase.
Your monster is destroyed if the monster you attack is in attack position, and you lose life points.
yes but the damage from the first attack doesnt add on to the second attack
other yugioh cards monster the higher attack points the better
Yes, it can.
Yes, of course you can. You can tribute it for the cost of an effect, or in main phase 2, for a Tribute Summon.
Only if it has an effect that lets it attack more than once per turn, like Asura Priest does.