1. Recognize that you can become a Christian if you want to become a Christian - there is no conclusive evidence against Christianity, it cannot be disproved: therefore Christianity is a perfectly valid option. Becoming a Christian is up to you and nobody else, an active process; and only you can decide to become a Christian.
2. Recognize that there is significant evidence in favour of Christianity - the evidence is not conclusive, for sure; but there is plenty of positive evidence, and of many types.
3. Recognize that being a Christian is not trivial - but a meaningful, significant thing: it has major implications for how you feel, what are your aims, motivations and behaviours. It makes a difference to be a Christian.
4. Then, to be a Christian is first a simple choice, a statement - to yourself and others that you are now a Christian. This is faith.
5. To have faith is an essential first step but is only a first step: you will want to have knowledge that your faith is valid; you will want certainty that Christianity is True.
And this step requires work from you.
For faith to become knowledge, you need to know what it would be like - how this happens.
And the answer is that certainty comes to you personally and only to you personally by divine confirmation, confirmation by revelation - direct communication from God to you.
(Only to you personally, because each person must chose and learn this for himself - each person must go through the process.)
A revelation and confirmation of knowledge could happen during prayer, by a personal miracle, fulfilled prophecy, sure guidance and other signs intended to convince you (not other people).
In other words, step five - the getting of certain knowledge - is something that happens by you, personally, experiencing some divine communication and confirmation. It is not a matter of teaching, scholarship and study; but instead an inner, subjective knowledge and certainty.
But always the whole process at every level, and afterwards, is underpinned by and sustained by choice - free choice to accept or to reject.
Again I emphasize: The matter is personal. Do not expect to be overwhelmed or coerced by force of argument or power external; but rather convinced by the kind of gratitude, love, hope and delight that you glimpse from the best of human relationships.
Choice, Faith, Revelation.
Statement, Work, Knowledge.