numbering added by me said:
1.Is speaking to someone communication?
2.Is it a sin to speak to/ pray to dead people?
3.Is it a sin to pray to/ speak to dead saints?
4.Can dead saints hear our prayers?
5.Is praying to Jesus enough?
6.How did Jesus teach us to pray?
When I say dead I mean physically dead.
1. Yes, speaking to someone is communication.
2. It is not a sin to speak to someone who is physically dead, unless you are trying to do conjurations or other medium-esque "talk back to me" type things. I mean, it's not a sin to stand over your mother/father/best friend/siblings/other important person's grave and cry and go "I MISS YOU SO MUCH MOM/DAD/BOB/SIS/ETC! WHY DID YOU HAVE TO DIE?".
3. No, it is not.
4. I believe they can, because while they are physically dead, they fall under those who are referred to in the Bible as having merely fallen asleep, and are alive with the Lord, awaiting the Resurrection of the Body.
5. DON"T JUMP ON THIS ANSWER UNTIL YOU READ THE WHOLE SET OF ANSWERS TO FIVE AND SIX!
Praying to Jesus is not enough. There is also a Father and a Holy Spirit. I mean, if you're going to ask...
6. how did Jesus teach us to pray, He gave to us the Our Father (Luke 11:2-4/Matthew 6:9-13), not the Our Jesus And Only Jesus. Jesus also taught us to pray quietly, not loudly on the street as the hypocrits do, as well as directing our prayers to the Father. We are also to ask, as the ones who persistently ask receive. (Luke 11:5-13). We are to make peace with each other before we present gifts to the Lord (Matthew 5:21-24). And we are taught in Matthew 18:19-20 that when even two or three gather to ask of the Father, God will be there.
And while it is not what Jesus personally taught, we see in Ephesians 6:18, we are to pray in the Spirit, and praying for all the saints (although, admittedly, probably not quite the same meaning as you were using. But still, most of those who were living saints then are dead saints now). James 5:14-19 tells us about times when there are specifically to be group prayers, and that we are to confess our sins to each other and pray for each other. And since the saints are our brethren, our community, it is right and proper to pray to them to ask them to pray for us, and it is proper that they pray for us from where they are. And since multiple people praying for something definitely puts us into Matthew 18:19-20 territory, for while the physically dead saints may no longer have bodies, they are still with us as part of the Church in spirit.
Also, keep in mind that prayers to the saints are always along the lines of:
Please pray to God for me for X thing on my behalf.
Please intercede with God for me.
Please help me with this thing thru the Lord.
You get the idea. Praying to the saints isn't asking the SAINTS to help us, it is asking the saints to pray for us as well for the help we desire.
Metherion