The first and most important thing is that you accept the simple message of the Gospel - that God in the Person of Jesus Christ came down from heaven and died on a cross for the sins of mankind - and for your sins in particular - so that you being freely forgiven your sins might inherit eternal life in Heaven.
Consider how great is this promise from Jesus Christ:
"I (Jesus) tell you the truth, whoever hears my word and believes him who sent me has eternal life and will not be condemned; he has crossed over from death to life."
John 5:24
When you accept this in your heart, and believe the testimony God the Father has borne concerning His Son, you begin to come into agreement with God and you can begin to understand.
Understanding comes first to the heart - and then we begin to fit the pieces together to come to a clear intellectual understanding of truth.
The "navel" of all truth is this - God, hanging on a cross, for the sins of His rebellious children.
The apostles walked with Jesus 3 years, but did not understand until after He suffered and rose from the dead.
Only then were they able to receive the gift of the Spirit.
In Luke we read:
"He said to them, "This is what I told you while I was still with you: Everything must be fulfilled that is written about me in the Law of Moses, the Prophets and the Psalms."
Then he opened their minds so they could understand the Scriptures
. He told them, "This is what is written: The Christ will suffer and rise from the dead on the third day, and repentance and forgiveness of sins will be preached in his name to all nations, beginning at Jerusalem. You are witnesses of these things."
Luke 24:44-48
This same meeting is recorded in John's Gospel where we read:
"Again Jesus said, "Peace be with you! As the Father has sent me, I am sending you." And with that he breathed on them and said, "Receive the Holy Spirit. If you forgive anyone his sins, they are forgiven; if you do not forgive them, they are not forgiven."
John 20:21-23
It was when they received the Spirit that they began to understand the Scriptures.
Ask Jesus for the gift of forgiveness and the Holy Spirit, and expect the answer will be yes - He always received those who came to Him - and you will receive the gift of the Counselor, God the Holy Spirit, come down from heaven to teach us and lead us into all truth:
"But the Counselor, the Holy Spirit, whom the Father will send in my name, will teach you all things and will remind you of everything I have said to you."
John 14:26