I would like to know more about being in a Polyamory relationship
There are varied ways of being in a polyamorous relationship, it really depends on individuals views.
must there be consent on both side? tell me more I am curious to know
Yes, consent is a large part of an effective and responsible polyamorous relationship.
ok so what is the main definition of a Polyamory relationship to start with?
Poly means many or several in greek.  So it is really defined by the desire for relationships with more than one partner.
oh wow. I see, very interesting
Polyamory is a defined word in the Oxford English Dictionary and is becoming more popular as the years go on.
I see it as a weird desire though and very immoral
Polyamory
Polyamory (from Greek ', "many, several", and Latin ', "love") is the practice of, or desire for, intimate relationships with more than one partner, with the consent of all partners involved. It has been described as "consensual, ethical, and responsible non-monogamy". People who identify as polyamorous believe in an open relationship with a conscious management of jealousy; they reject the view that sexual and relational exclusivity are necessary for deep, committed, long-term
non-monogamy or CNM, is a type of marriage wherein the involved parties unequivocally consent to their partners entering or engaging in romantic and/or sexual relationships with other people. 
Types of open relationships Polyamory.
Polyamory is the practice, desire, or acceptance of having more than one intimate relationship at a time with the knowledge and consent of everyone involved. While "open relationship" is sometimes used as a synonym for "polyamory" or "polyamorous relationship", the terms are not synonymous. The "open" in "