God may make himself known to us through normal, everyday experiences such as a nice sunset or a rainbow . This is very much down to interpretation as some people may think of a rainbow as a scientifically explained occurenece whereas others would see God showing himself to us.
God may also make himself known to us through a direct, personal message or experience an example of this would be Martin Luther King and his coffee cup experience with God.
This is when you see something in a dream that reveals a personal attribute of God.
God's Characteristics - many are paradoxes
Supremacy - the upmost power and authority.
Omnipotent - all powerful.
Omniscient - all knowing.
Omnibenevolent - all loving.
Personal nature / omnipresent - he is everywhere and we can feel close to him.
Immanent - he is part of our lives.
Eternal - everlasting ; no beginning or end.
Impersonal nature / transcedent - beyond all human knowledge.
Reality / Illusion - the actual truth / a misjudged perception of reality.