I want to know the best way to start my spiritual journey? Could someone suggest any type of Dhyana or meditation?
In my opinion, one should go for first reading theory given by maharishi patanjali. It is know by name "ashtanga yoga". He lays down step by step process on how to attain higher states of oneself. Meditation is the last step in his process.
One of the book, which I read and really liked it because of its scientific and practical approach is https://en.wikipedia.org/wiki/Raja_Yoga_(book)
For overview on ashtanga yoga, please refer https://en.wikipedia.org/wiki/Ashtanga_(eight_limbs_of_yoga)
Note, I am not saying that other types of yoga are not effective but only expressing my views/experience that ashtanga yoga is very effective in today's world because it starts from gross and move to subtle higher planes. To know different kinds of yogas and choose which is best according to your nature, you can read bhagwat geeta https://en.wikipedia.org/wiki/Bhagavad_Gita
Also, keep in mind that once you decide on which path you want to follow. You should go and consult a teacher/guru on that path. My best wishes to you on this path.