When folks tell me that they have " basically walked away from their faith " but want to come back to their Christian Beliefs " as quickly as possible " ..... I always suggest their very first step should be to " READ THE RED ! " ..... and why is that ?
By getting yourself once again " familiar ", if you will, or putting yourself " back in touch " with those things that Jesus the Christ said ..... you will quickly rediscover " why you became a Christian in the first place ! "
Remember what John told us in 1 John:
You need to have His commandments in your head, your heart, and in your very soul !
If you follow the below path you will not only be back where you were before you went astray .... " but even closer to God than you were before ! ". And this is what I suggest you do: ( and it's worked for many )
If you don't already have one ..... get a Bible that has the words of Jesus the Christ shown in " Red " ( the King James 1611 Bible recommended because of the poetry of the language ). Read the " Red ", and only the " Red ", in " Matthew, Mark, Luke, John, Acts, " and the " Book of Revelations ! " At this point don't worry about who Jesus is talking to or even where he is ..... just read the " Red " and let His words sink in !
Why should you read the " Red Only ? " By reading the red only you will quickly get yourself, " and the very core of your previous Christian Faith ", back to were you once were ..... And then we have Step #2:
Read the " Red " again just as noted in Step #1 above !